3x+3=x-18

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


Simplifying
3x + 3 = x + -18

Reorder the terms:
3 + 3x = x + -18

Reorder the terms:
3 + 3x = -18 + x

Solving
3 + 3x = -18 + x

Solving for variable 'x'.

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

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

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

Combine like terms: x + -1x = 0
3 + 2x = -18 + 0
3 + 2x = -18

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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