1-y=-9

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Solution for 1-y=-9 equation: 


Simplifying
1 + -1y = -9

Solving
1 + -1y = -9

Solving for variable 'y'.

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

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

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

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

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

Simplifying
y = 10

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