6+3x=18-x

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Solution for 6+3x=18-x equation:


Simplifying
6 + 3x = 18 + -1x

Solving
6 + 3x = 18 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
6 + 3x + x = 18 + -1x + x

Combine like terms: 3x + x = 4x
6 + 4x = 18 + -1x + x

Combine like terms: -1x + x = 0
6 + 4x = 18 + 0
6 + 4x = 18

Add '-6' to each side of the equation.
6 + -6 + 4x = 18 + -6

Combine like terms: 6 + -6 = 0
0 + 4x = 18 + -6
4x = 18 + -6

Combine like terms: 18 + -6 = 12
4x = 12

Divide each side by '4'.
x = 3

Simplifying
x = 3

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