12+x=42+2x

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Solution for 12+x=42+2x equation:


Simplifying
12 + x = 42 + 2x

Solving
12 + x = 42 + 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.
12 + x + -2x = 42 + 2x + -2x

Combine like terms: x + -2x = -1x
12 + -1x = 42 + 2x + -2x

Combine like terms: 2x + -2x = 0
12 + -1x = 42 + 0
12 + -1x = 42

Add '-12' to each side of the equation.
12 + -12 + -1x = 42 + -12

Combine like terms: 12 + -12 = 0
0 + -1x = 42 + -12
-1x = 42 + -12

Combine like terms: 42 + -12 = 30
-1x = 30

Divide each side by '-1'.
x = -30

Simplifying
x = -30

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