3x-x+12=30-12

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Solution for 3x-x+12=30-12 equation:


Simplifying
3x + -1x + 12 = 30 + -12

Reorder the terms:
12 + 3x + -1x = 30 + -12

Combine like terms: 3x + -1x = 2x
12 + 2x = 30 + -12

Combine like terms: 30 + -12 = 18
12 + 2x = 18

Solving
12 + 2x = 18

Solving for variable 'x'.

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

Add '-12' to each side of the equation.
12 + -12 + 2x = 18 + -12

Combine like terms: 12 + -12 = 0
0 + 2x = 18 + -12
2x = 18 + -12

Combine like terms: 18 + -12 = 6
2x = 6

Divide each side by '2'.
x = 3

Simplifying
x = 3

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