-20-2y=20

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Solution for -20-2y=20 equation: 


Simplifying
-20 + -2y = 20

Solving
-20 + -2y = 20

Solving for variable 'y'.

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

Add '20' to each side of the equation.
-20 + 20 + -2y = 20 + 20

Combine like terms: -20 + 20 = 0
0 + -2y = 20 + 20
-2y = 20 + 20

Combine like terms: 20 + 20 = 40
-2y = 40

Divide each side by '-2'.
y = -20

Simplifying
y = -20

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