-(7y-7)-(-6y-6)=-9

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Solution for -(7y-7)-(-6y-6)=-9 equation:


Simplifying
-1(7y + -7) + -1(-6y + -6) = -9

Reorder the terms:
-1(-7 + 7y) + -1(-6y + -6) = -9
(-7 * -1 + 7y * -1) + -1(-6y + -6) = -9
(7 + -7y) + -1(-6y + -6) = -9

Reorder the terms:
7 + -7y + -1(-6 + -6y) = -9
7 + -7y + (-6 * -1 + -6y * -1) = -9
7 + -7y + (6 + 6y) = -9

Reorder the terms:
7 + 6 + -7y + 6y = -9

Combine like terms: 7 + 6 = 13
13 + -7y + 6y = -9

Combine like terms: -7y + 6y = -1y
13 + -1y = -9

Solving
13 + -1y = -9

Solving for variable 'y'.

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

Add '-13' to each side of the equation.
13 + -13 + -1y = -9 + -13

Combine like terms: 13 + -13 = 0
0 + -1y = -9 + -13
-1y = -9 + -13

Combine like terms: -9 + -13 = -22
-1y = -22

Divide each side by '-1'.
y = 22

Simplifying
y = 22

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