# Math

posted by .

My equation

Y=4Y+30

I did;

Y-4Y=-3Y

My equation

-3Y=30--->30/-3

I get -10

yet the checking does not work.

Does the negative go on the whole 3Y or just the 3?

• Math -

Let's do the checking part:
Y = 4Y + 30
if Y = -10,
-10 = -10(4) + 30
-10 = -40 + 30
-10 = -10
Since both sides of the equation are equal, then Y is indeed equal to -10.

Hope this helps :3

• Math -

I don't have to make it positive?

• Math -

No, you don't have to.
30 / 3 = 10
Here, 10 is positive because both 30 and 3 are positive.
30 / -3 = -10
While here, one of them is negative so the answer must also be negative.

*Note that if however, both 30 and 3 are negative, the answer is positive.

## Similar Questions

1. ### math

how do you write an equation and state what the variable n represnts. 54 -n- =24 If you're writing an equation where you need to state what the variable is, then you need to end up with an equation where n is the only thing on one …
2. ### math

can anyone help with this? suppose you bought some 32 cents stamps and some 20 cents stamps. you spent \$3.92 for 16 stamps. how many of each stamp did you buy?
3. ### precalc

does anyone know the general form equation of a circle with a center (4,5) that passes through (-1,2) ...and just checking, would the standard form equation be: (-1+4)^2 + (2+5)^2 = 58
4. ### Algebra

How can you tell an equation's real or imaginary roots just from its graph, without knowing the equation?

These questions that I have completed are on a test review for my exam and I would just like to know if they are correct. These are only a few of the questions, I have more that are just not complete yet. Thank You! 1) List the intercepts …
6. ### Math

These questions that I have completed are on a test review for my exam and I would just like to know if they are correct. These are only a few of the questions, I have more that are just not complete yet. Thank You! 1) List the intercepts …
7. ### Algebra

The equation is 5= -z - 3 Why is the answer -8 and not just positive 8?
8. ### Math

Solve the equation for d 0.2(d-6)=0.3d+5-3+0.1d I had d=-16 Work: 1. distribute 2. 0.2d-1.2=0.3d+5-3+0.1d 3. 0.2d=0.4d+3.2 4. -0.2d=3.2 5. divide 6. d= -16 I even did a check 0.2(d-6)=0.3d+5-3+0.1d 0.2(-16-6)=0.3(-16)+5-3+0.1(-16) …
9. ### Algebra 2

Use the following equation to perform the operations below (do not graph the equation yet): y ={x + 5}{x + 1}\{(x + 3)(x - 2)}{(x - 4)(x + 1)}) - {1}/{x - 2} What graphical feature occurs at {x} = -1?
10. ### Just checking Math-Absolute Value

The equation for "the distance from x to -4 is less than 12" is |x-4|<12?

More Similar Questions