-9-2(y-1)=10

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Solution for -9-2(y-1)=10 equation: 


Simplifying
-9 + -2(y + -1) = 10

Reorder the terms:
-9 + -2(-1 + y) = 10
-9 + (-1 * -2 + y * -2) = 10
-9 + (2 + -2y) = 10

Combine like terms: -9 + 2 = -7
-7 + -2y = 10

Solving
-7 + -2y = 10

Solving for variable 'y'.

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

Add '7' to each side of the equation.
-7 + 7 + -2y = 10 + 7

Combine like terms: -7 + 7 = 0
0 + -2y = 10 + 7
-2y = 10 + 7

Combine like terms: 10 + 7 = 17
-2y = 17

Divide each side by '-2'.
y = -8.5

Simplifying
y = -8.5

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