7(8-y)+9=-9(y-4)-9

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Solution for 7(8-y)+9=-9(y-4)-9 equation:


Simplifying
7(8 + -1y) + 9 = -9(y + -4) + -9
(8 * 7 + -1y * 7) + 9 = -9(y + -4) + -9
(56 + -7y) + 9 = -9(y + -4) + -9

Reorder the terms:
56 + 9 + -7y = -9(y + -4) + -9

Combine like terms: 56 + 9 = 65
65 + -7y = -9(y + -4) + -9

Reorder the terms:
65 + -7y = -9(-4 + y) + -9
65 + -7y = (-4 * -9 + y * -9) + -9
65 + -7y = (36 + -9y) + -9

Reorder the terms:
65 + -7y = 36 + -9 + -9y

Combine like terms: 36 + -9 = 27
65 + -7y = 27 + -9y

Solving
65 + -7y = 27 + -9y

Solving for variable 'y'.

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

Add '9y' to each side of the equation.
65 + -7y + 9y = 27 + -9y + 9y

Combine like terms: -7y + 9y = 2y
65 + 2y = 27 + -9y + 9y

Combine like terms: -9y + 9y = 0
65 + 2y = 27 + 0
65 + 2y = 27

Add '-65' to each side of the equation.
65 + -65 + 2y = 27 + -65

Combine like terms: 65 + -65 = 0
0 + 2y = 27 + -65
2y = 27 + -65

Combine like terms: 27 + -65 = -38
2y = -38

Divide each side by '2'.
y = -19

Simplifying
y = -19

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