1=-1*y

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Solution for 1=-1*y equation: 


Simplifying
1 = -1y

Solving
1 = -1y

Solving for variable 'y'.

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

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

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

Add '-1' to each side of the equation.
1 + -1 + y = 0 + -1

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

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

Simplifying
y = -1

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