15-7y=-25-2y

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Solution for 15-7y=-25-2y equation:


Simplifying
15 + -7y = -25 + -2y

Solving
15 + -7y = -25 + -2y

Solving for variable 'y'.

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

Add '2y' to each side of the equation.
15 + -7y + 2y = -25 + -2y + 2y

Combine like terms: -7y + 2y = -5y
15 + -5y = -25 + -2y + 2y

Combine like terms: -2y + 2y = 0
15 + -5y = -25 + 0
15 + -5y = -25

Add '-15' to each side of the equation.
15 + -15 + -5y = -25 + -15

Combine like terms: 15 + -15 = 0
0 + -5y = -25 + -15
-5y = -25 + -15

Combine like terms: -25 + -15 = -40
-5y = -40

Divide each side by '-5'.
y = 8

Simplifying
y = 8

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