-y=7-2y

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Solution for -y=7-2y equation: 


Simplifying
-1y = 7 + -2y

Solving
-1y = 7 + -2y

Solving for variable 'y'.

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

Add '2y' to each side of the equation.
-1y + 2y = 7 + -2y + 2y

Combine like terms: -1y + 2y = 1y
1y = 7 + -2y + 2y

Combine like terms: -2y + 2y = 0
1y = 7 + 0
1y = 7

Divide each side by '1'.
y = 7

Simplifying
y = 7

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