20+x=40-y

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Solution for 20+x=40-y equation: 


Simplifying
20 + x = 40 + -1y

Solving
20 + x = 40 + -1y

Solving for variable 'x'.

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

Add '-20' to each side of the equation.
20 + -20 + x = 40 + -20 + -1y

Combine like terms: 20 + -20 = 0
0 + x = 40 + -20 + -1y
x = 40 + -20 + -1y

Combine like terms: 40 + -20 = 20
x = 20 + -1y

Simplifying
x = 20 + -1y

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