40-2x=20

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Solution for 40-2x=20 equation: 


Simplifying
40 + -2x = 20

Solving
40 + -2x = 20

Solving for variable 'x'.

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

Add '-40' to each side of the equation.
40 + -40 + -2x = 20 + -40

Combine like terms: 40 + -40 = 0
0 + -2x = 20 + -40
-2x = 20 + -40

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

Divide each side by '-2'.
x = 10

Simplifying
x = 10

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