-91+2y+7=3(3y-4)-9

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Solution for -91+2y+7=3(3y-4)-9 equation:


Simplifying
-91 + 2y + 7 = 3(3y + -4) + -9

Reorder the terms:
-91 + 7 + 2y = 3(3y + -4) + -9

Combine like terms: -91 + 7 = -84
-84 + 2y = 3(3y + -4) + -9

Reorder the terms:
-84 + 2y = 3(-4 + 3y) + -9
-84 + 2y = (-4 * 3 + 3y * 3) + -9
-84 + 2y = (-12 + 9y) + -9

Reorder the terms:
-84 + 2y = -12 + -9 + 9y

Combine like terms: -12 + -9 = -21
-84 + 2y = -21 + 9y

Solving
-84 + 2y = -21 + 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.
-84 + 2y + -9y = -21 + 9y + -9y

Combine like terms: 2y + -9y = -7y
-84 + -7y = -21 + 9y + -9y

Combine like terms: 9y + -9y = 0
-84 + -7y = -21 + 0
-84 + -7y = -21

Add '84' to each side of the equation.
-84 + 84 + -7y = -21 + 84

Combine like terms: -84 + 84 = 0
0 + -7y = -21 + 84
-7y = -21 + 84

Combine like terms: -21 + 84 = 63
-7y = 63

Divide each side by '-7'.
y = -9

Simplifying
y = -9

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