6y-9=-(y-12)

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Solution for 6y-9=-(y-12) equation:


Simplifying
6y + -9 = -1(y + -12)

Reorder the terms:
-9 + 6y = -1(y + -12)

Reorder the terms:
-9 + 6y = -1(-12 + y)
-9 + 6y = (-12 * -1 + y * -1)
-9 + 6y = (12 + -1y)

Solving
-9 + 6y = 12 + -1y

Solving for variable 'y'.

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

Add 'y' to each side of the equation.
-9 + 6y + y = 12 + -1y + y

Combine like terms: 6y + y = 7y
-9 + 7y = 12 + -1y + y

Combine like terms: -1y + y = 0
-9 + 7y = 12 + 0
-9 + 7y = 12

Add '9' to each side of the equation.
-9 + 9 + 7y = 12 + 9

Combine like terms: -9 + 9 = 0
0 + 7y = 12 + 9
7y = 12 + 9

Combine like terms: 12 + 9 = 21
7y = 21

Divide each side by '7'.
y = 3

Simplifying
y = 3

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