-13=15-4y

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Solution for -13=15-4y equation:


Simplifying
-13 = 15 + -4y

Solving
-13 = 15 + -4y

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '4y' to each side of the equation.
-13 + 4y = 15 + -4y + 4y

Combine like terms: -4y + 4y = 0
-13 + 4y = 15 + 0
-13 + 4y = 15

Add '13' to each side of the equation.
-13 + 13 + 4y = 15 + 13

Combine like terms: -13 + 13 = 0
0 + 4y = 15 + 13
4y = 15 + 13

Combine like terms: 15 + 13 = 28
4y = 28

Divide each side by '4'.
y = 7

Simplifying
y = 7

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