-y-9=-2y

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Solution for -y-9=-2y equation:


Simplifying
-1y + -9 = -2y

Reorder the terms:
-9 + -1y = -2y

Solving
-9 + -1y = -2y

Solving for variable 'y'.

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

Add '2y' to each side of the equation.
-9 + -1y + 2y = -2y + 2y

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

Combine like terms: -2y + 2y = 0
-9 + 1y = 0

Add '9' to each side of the equation.
-9 + 9 + 1y = 0 + 9

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

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

Divide each side by '1'.
y = 9

Simplifying
y = 9

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