9-2y=-1

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Solution for 9-2y=-1 equation: 


Simplifying
9 + -2y = -1

Solving
9 + -2y = -1

Solving for variable 'y'.

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

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

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

Combine like terms: -1 + -9 = -10
-2y = -10

Divide each side by '-2'.
y = 5

Simplifying
y = 5

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