(-y+7)-y=-9

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


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

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

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

Combine like terms: -1y + -1y = -2y
7 + -2y = -9

Solving
7 + -2y = -9

Solving for variable 'y'.

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

Add '-7' to each side of the equation.
7 + -7 + -2y = -9 + -7

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

Combine like terms: -9 + -7 = -16
-2y = -16

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

Simplifying
y = 8

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