Can someone check my answers? And if there wrong can you help me?

y-5 / 3 = 1
-2
8
18
6

Combine like terms:

-21a + -16a
-5a
5a
37a
-37a

Simplify the expression:

9a - b - 2a - 10b
-7a +11b
11a + 9b
-11a + 9b
7a + 11b

5 (x+10) + x
6x + 15
5x + 15
6x + 50
4x - 50

Solve the equations:

-4n + 7 + 2n = 1
1
3
-3
4

4(y-4) = 8
-2
2
4
6

My answers:
A
D
C
C
B
A

I started to check this and got lost. Please repost, numbering your questions and numbering your answers. Also identify the choices with letters.

Ok just a sec

Let's go through each question and check your answers:

1. y - 5 / 3 = 1
To solve for y, we need to isolate it on one side of the equation. We can do this by multiplying both sides of the equation by 3, which will cancel out the division:
3(y - 5 / 3) = 3 * 1
Simplifying the equation:
3y - 5 = 3
Adding 5 to both sides to isolate y:
3y - 5 + 5 = 3 + 5
Simplifying further:
3y = 8
Finally, divide both sides of the equation by 3:
y = 8 / 3
Therefore, the correct answer is not among the options you provided. The solution is y = 8 / 3.

2. -21a + -16a
To combine like terms, we add the coefficients of the same variable. In this case, we add -21a and -16a:
-21a + -16a = -37a
Therefore, the correct answer is A. -37a.

3. 9a - b - 2a - 10b
To simplify the expression, combine the like terms.
Starting with the variables:
9a - 2a = 7a
And with the coefficients of b:
-1b - 10b = -11b
Bringing it together:
7a - 11b
Therefore, the correct answer is A. 7a - 11b.

4. 5 (x+10) + x
To simplify, distribute the 5 to both terms inside the parentheses:
5(x) + 5(10) + x
Simplifying further:
5x + 50 + x
Combining like terms:
5x + x + 50
Finally, combining the x terms:
6x + 50
Therefore, the correct answer is B. 6x + 50.

5. -4n + 7 + 2n = 1
To solve for n, we need to simplify and combine like terms on the left side of the equation:
-4n + 2n + 7 = 1
Combining the n terms:
-2n + 7 = 1
Next, isolate -2n by subtracting 7 from both sides:
-2n + 7 - 7 = 1 - 7
Simplifying:
-2n = -6
Finally, divide both sides of the equation by -2 to solve for n:
n = -6 / -2
Thus, n = 3.
Therefore, the correct answer is not among the options you provided. The solution is n = 3.

6. 4(y-4) = 8
To solve for y, distribute the 4 to both terms inside the parentheses:
4y - 16 = 8
Next, isolate 4y by adding 16 to both sides of the equation:
4y - 16 + 16 = 8 + 16
Simplifying:
4y = 24
Finally, divide both sides of the equation by 4 to solve for y:
y = 24 / 4
Therefore, y = 6.
Therefore, the correct answer is D. 6.

Revised answers:

1. Not among the options provided
2. A. -37a
3. A. 7a - 11b
4. B. 6x + 50
5. Not among the options provided
6. D. 6

To check your answers, let's go through each question and explain how to solve it.

1) For the equation (y-5) / 3 = 1, you need to isolate the variable y. First, multiply both sides of the equation by 3 to get rid of the fraction: (3) * [(y-5) / 3] = (1) * 3. This simplifies to y - 5 = 3. Then, add 5 to both sides to isolate the y term: y = 3 + 5 = 8. Therefore, the correct answer is 8.

2) For the expression -21a + -16a, you need to combine like terms. Similar terms have the same variable and exponent. In this case, -21a and -16a are both "a" terms, so you can simply add their coefficients (-21 and -16): -21a + -16a = (-21 - 16)a = -37a. Therefore, the correct answer is -37a.

3) To simplify the expression 9a - b - 2a - 10b, you need to combine like terms again. Add the coefficients of the "a" term: 9a - 2a = (9 - 2)a = 7a. Then, add the coefficients of the "b" term: -b - 10b = (-1 + (-10))b = -11b. Putting it together, the simplified expression is 7a - 11b. Therefore, the correct answer is C.

4) For the expression 5(x+10) + x, you need to distribute the 5 to both the terms inside the parentheses: 5 * (x+10) + x = 5x + 50 + x = 6x + 50. Therefore, the correct answer is 6x + 50.

5) Now, let's solve the equation -4n + 7 + 2n = 1. First, combine like terms: (-4n + 2n) + 7 = -2n + 7. Then, subtract 7 from both sides of the equation to isolate the variable term: -2n = 1 - 7 = -6. Finally, divide both sides by -2 to solve for n: n = -6 / -2 = 3. Therefore, the correct answer is 3.

6) Lastly, solving the equation 4(y-4) = 8 involves a similar process. Distribute the 4 to the terms inside the parentheses: 4 * (y-4) = 4y - 16. Then, set the equation equal to the given value: 4y - 16 = 8. Next, add 16 to both sides: 4y = 8 + 16 = 24. Finally, divide both sides by 4 to solve for y: y = 24 / 4 = 6. Therefore, the correct answer is 6.

Based on the explanations above, the correct answers are:

1) 8
2) -37a
3) C (11a + 9b)
4) 6x + 50
5) 3
6) 6

Looking at your answers, it seems that your answers for questions 2 and 5 are incorrect. Therefore, the correct answers should be:

A
B
C
C
A
A

I hope this helps! Let me know if you have any further questions.