40=x-20

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Solution for 40=x-20 equation: 


Simplifying
40 = x + -20

Reorder the terms:
40 = -20 + x

Solving
40 = -20 + x

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.
40 + -1x = -20 + x + -1x

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

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

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

Combine like terms: -20 + -40 = -60
-1x = -60

Divide each side by '-1'.
x = 60

Simplifying
x = 60

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