40-2y=80

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Solution for 40-2y=80 equation: 


Simplifying
40 + -2y = 80

Solving
40 + -2y = 80

Solving for variable 'y'.

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

Add '-40' to each side of the equation.
40 + -40 + -2y = 80 + -40

Combine like terms: 40 + -40 = 0
0 + -2y = 80 + -40
-2y = 80 + -40

Combine like terms: 80 + -40 = 40
-2y = 40

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

Simplifying
y = -20

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