-9=-y

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Solution for -9=-y equation:


Simplifying
-9 = -1y

Solving
-9 = -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 + y = -1y + y

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

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

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

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

Simplifying
y = 9

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