Can someone check my answers? And if there wrong can you help me?
1. y-5 / 3 = 1
-2***
8
18
6
Combine like terms:
3. -21a + -16a
-5a
5a
37a
-37a***
Simplify the expression:
4. 9a - b - 2a - 10b
-7a +11b
11a + 9b
-11a + 9b***
7a + 11b
5. 5(x+10)+ x
6x + 15
5x + 15
6x + 50***
4x - 50
Solve the equations:
6. -4n + 7 + 2n = 1
1
3***
-3
4
7. 4(y-4) = 8
-2***
2
4
6
Ok Mrs. Sue did I do it right?!
Ok can you tell me how to do the ones I got wrong please?!
Sure, I can help you check your answers and explain how to solve each problem.
1. y - 5 / 3 = 1
To solve for y, you need to isolate the variable. Start by multiplying both sides of the equation by 3 to remove the fraction:
3(y - 5) / 3 = 1 * 3
This simplifies to:
y - 5 = 3
Now, add 5 to both sides of the equation to isolate y:
y - 5 + 5 = 3 + 5
This simplifies to:
y = 8
So the correct answer is 8.
3. -21a + -16a
To combine like terms, simply add the coefficients together:
-21a + (-16a) = -37a
So the correct answer is -37a.
4. 9a - b - 2a - 10b
To simplify the expression, combine like terms by adding or subtracting their coefficients:
9a - 2a = 7a
-b - 10b = -11b
Now, put the simplified terms together:
7a - 11b
So the correct answer is -11a + 9b.
5. 5(x+10) + x
Distribute the 5 to both terms inside the parentheses:
5x + 50 + x
Combine like terms:
5x + x = 6x
So the correct answer is 6x + 50.
6. -4n + 7 + 2n = 1
Combine like terms by adding or subtracting their coefficients:
-4n + 2n = -2n
Now, put the simplified terms together:
-2n + 7 = 1
To isolate n, subtract 7 from both sides:
-2n + 7 - 7 = 1 - 7
Simplifying further:
-2n = -6
Finally, divide both sides of the equation by -2 to solve for n:
-2n / -2 = -6 / -2
This simplifies to:
n = 3
So the correct answer is 3.
7. 4(y - 4) = 8
Distribute the 4 to both terms inside the parentheses:
4y - 16 = 8
Add 16 to both sides of the equation to isolate y:
4y - 16 + 16 = 8 + 16
Simplifying further:
4y = 24
Divide both sides of the equation by 4 to solve for y:
4y / 4 = 24 / 4
This simplifies to:
y = 6
So the correct answer is 6.
I hope this helps! Let me know if you have any further questions.
1. no
3. yes
4. no
5. yes
6. yes
7. no
1. y-5 / 3 = 1
Multiply both sides by 3. Solve for y.
4. 9a - b - 2a - 10b
This seems pretty straight-forward. Please try again.
7. 4(y-4) = 8
4y - 16 = 8
Take it from there.