-9=5(y-5)-7y

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Solution for -9=5(y-5)-7y equation:


Simplifying
-9 = 5(y + -5) + -7y

Reorder the terms:
-9 = 5(-5 + y) + -7y
-9 = (-5 * 5 + y * 5) + -7y
-9 = (-25 + 5y) + -7y

Combine like terms: 5y + -7y = -2y
-9 = -25 + -2y

Solving
-9 = -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.
-9 + 2y = -25 + -2y + 2y

Combine like terms: -2y + 2y = 0
-9 + 2y = -25 + 0
-9 + 2y = -25

Add '9' to each side of the equation.
-9 + 9 + 2y = -25 + 9

Combine like terms: -9 + 9 = 0
0 + 2y = -25 + 9
2y = -25 + 9

Combine like terms: -25 + 9 = -16
2y = -16

Divide each side by '2'.
y = -8

Simplifying
y = -8

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