20=x+y

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Solution for 20=x+y equation:


Simplifying
20 = x + y

Solving
20 = x + y

Solving for variable 'x'.

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

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

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

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

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

Divide each side by '-1'.
x = 20 + -1y

Simplifying
x = 20 + -1y

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