42-x=2x+9

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Solution for 42-x=2x+9 equation:


Simplifying
42 + -1x = 2x + 9

Reorder the terms:
42 + -1x = 9 + 2x

Solving
42 + -1x = 9 + 2x

Solving for variable 'x'.

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

Add '-2x' to each side of the equation.
42 + -1x + -2x = 9 + 2x + -2x

Combine like terms: -1x + -2x = -3x
42 + -3x = 9 + 2x + -2x

Combine like terms: 2x + -2x = 0
42 + -3x = 9 + 0
42 + -3x = 9

Add '-42' to each side of the equation.
42 + -42 + -3x = 9 + -42

Combine like terms: 42 + -42 = 0
0 + -3x = 9 + -42
-3x = 9 + -42

Combine like terms: 9 + -42 = -33
-3x = -33

Divide each side by '-3'.
x = 11

Simplifying
x = 11

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