-10-y=9y

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Solution for -10-y=9y equation:


Simplifying
-10 + -1y = 9y

Solving
-10 + -1y = 9y

Solving for variable 'y'.

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

Add '-9y' to each side of the equation.
-10 + -1y + -9y = 9y + -9y

Combine like terms: -1y + -9y = -10y
-10 + -10y = 9y + -9y

Combine like terms: 9y + -9y = 0
-10 + -10y = 0

Add '10' to each side of the equation.
-10 + 10 + -10y = 0 + 10

Combine like terms: -10 + 10 = 0
0 + -10y = 0 + 10
-10y = 0 + 10

Combine like terms: 0 + 10 = 10
-10y = 10

Divide each side by '-10'.
y = -1

Simplifying
y = -1

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