7y+15=5y-15

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Solution for 7y+15=5y-15 equation: 


Simplifying
7y + 15 = 5y + -15

Reorder the terms:
15 + 7y = 5y + -15

Reorder the terms:
15 + 7y = -15 + 5y

Solving
15 + 7y = -15 + 5y

Solving for variable 'y'.

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

Add '-5y' to each side of the equation.
15 + 7y + -5y = -15 + 5y + -5y

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

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

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

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

Combine like terms: -15 + -15 = -30
2y = -30

Divide each side by '2'.
y = -15

Simplifying
y = -15

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