2(-1)-y=9

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


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

Multiply 2 * -1
-2 + -1y = 9

Solving
-2 + -1y = 9

Solving for variable 'y'.

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

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

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

Combine like terms: 9 + 2 = 11
-1y = 11

Divide each side by '-1'.
y = -11

Simplifying
y = -11

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