-15=5(y-7)-7y

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Solution for -15=5(y-7)-7y equation:


Simplifying
-15 = 5(y + -7) + -7y

Reorder the terms:
-15 = 5(-7 + y) + -7y
-15 = (-7 * 5 + y * 5) + -7y
-15 = (-35 + 5y) + -7y

Combine like terms: 5y + -7y = -2y
-15 = -35 + -2y

Solving
-15 = -35 + -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 + 2y = -35 + -2y + 2y

Combine like terms: -2y + 2y = 0
-15 + 2y = -35 + 0
-15 + 2y = -35

Add '15' to each side of the equation.
-15 + 15 + 2y = -35 + 15

Combine like terms: -15 + 15 = 0
0 + 2y = -35 + 15
2y = -35 + 15

Combine like terms: -35 + 15 = -20
2y = -20

Divide each side by '2'.
y = -10

Simplifying
y = -10

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