42-2x=82

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Solution for 42-2x=82 equation: 


Simplifying
42 + -2x = 82

Solving
42 + -2x = 82

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 = 82 + -42

Combine like terms: 42 + -42 = 0
0 + -2x = 82 + -42
-2x = 82 + -42

Combine like terms: 82 + -42 = 40
-2x = 40

Divide each side by '-2'.
x = -20

Simplifying
x = -20

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