-3+x+2x-x=18

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Solution for -3+x+2x-x=18 equation:


Simplifying
-3 + x + 2x + -1x = 18

Combine like terms: x + 2x = 3x
-3 + 3x + -1x = 18

Combine like terms: 3x + -1x = 2x
-3 + 2x = 18

Solving
-3 + 2x = 18

Solving for variable 'x'.

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

Add '3' to each side of the equation.
-3 + 3 + 2x = 18 + 3

Combine like terms: -3 + 3 = 0
0 + 2x = 18 + 3
2x = 18 + 3

Combine like terms: 18 + 3 = 21
2x = 21

Divide each side by '2'.
x = 10.5

Simplifying
x = 10.5

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