-2y+9(-2y+1)=-5+7(-8-y)

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Solution for -2y+9(-2y+1)=-5+7(-8-y) equation:


Simplifying
-2y + 9(-2y + 1) = -5 + 7(-8 + -1y)

Reorder the terms:
-2y + 9(1 + -2y) = -5 + 7(-8 + -1y)
-2y + (1 * 9 + -2y * 9) = -5 + 7(-8 + -1y)
-2y + (9 + -18y) = -5 + 7(-8 + -1y)

Reorder the terms:
9 + -2y + -18y = -5 + 7(-8 + -1y)

Combine like terms: -2y + -18y = -20y
9 + -20y = -5 + 7(-8 + -1y)
9 + -20y = -5 + (-8 * 7 + -1y * 7)
9 + -20y = -5 + (-56 + -7y)

Combine like terms: -5 + -56 = -61
9 + -20y = -61 + -7y

Solving
9 + -20y = -61 + -7y

Solving for variable 'y'.

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

Add '7y' to each side of the equation.
9 + -20y + 7y = -61 + -7y + 7y

Combine like terms: -20y + 7y = -13y
9 + -13y = -61 + -7y + 7y

Combine like terms: -7y + 7y = 0
9 + -13y = -61 + 0
9 + -13y = -61

Add '-9' to each side of the equation.
9 + -9 + -13y = -61 + -9

Combine like terms: 9 + -9 = 0
0 + -13y = -61 + -9
-13y = -61 + -9

Combine like terms: -61 + -9 = -70
-13y = -70

Divide each side by '-13'.
y = 5.384615385

Simplifying
y = 5.384615385

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