(-9y+7)-(-2y-7)=0

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Solution for (-9y+7)-(-2y-7)=0 equation:


Simplifying
(-9y + 7) + -1(-2y + -7) = 0

Reorder the terms:
(7 + -9y) + -1(-2y + -7) = 0

Remove parenthesis around (7 + -9y)
7 + -9y + -1(-2y + -7) = 0

Reorder the terms:
7 + -9y + -1(-7 + -2y) = 0
7 + -9y + (-7 * -1 + -2y * -1) = 0
7 + -9y + (7 + 2y) = 0

Reorder the terms:
7 + 7 + -9y + 2y = 0

Combine like terms: 7 + 7 = 14
14 + -9y + 2y = 0

Combine like terms: -9y + 2y = -7y
14 + -7y = 0

Solving
14 + -7y = 0

Solving for variable 'y'.

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

Add '-14' to each side of the equation.
14 + -14 + -7y = 0 + -14

Combine like terms: 14 + -14 = 0
0 + -7y = 0 + -14
-7y = 0 + -14

Combine like terms: 0 + -14 = -14
-7y = -14

Divide each side by '-7'.
y = 2

Simplifying
y = 2

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