42-2x=20

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Solution for 42-2x=20 equation: 


Simplifying
42 + -2x = 20

Solving
42 + -2x = 20

Solving for variable 'x'.

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

Add '-42' to each side of the equation.
42 + -42 + -2x = 20 + -42

Combine like terms: 42 + -42 = 0
0 + -2x = 20 + -42
-2x = 20 + -42

Combine like terms: 20 + -42 = -22
-2x = -22

Divide each side by '-2'.
x = 11

Simplifying
x = 11

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