9x+42=3x-18

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Solution for 9x+42=3x-18 equation:


Simplifying
9x + 42 = 3x + -18

Reorder the terms:
42 + 9x = 3x + -18

Reorder the terms:
42 + 9x = -18 + 3x

Solving
42 + 9x = -18 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
42 + 9x + -3x = -18 + 3x + -3x

Combine like terms: 9x + -3x = 6x
42 + 6x = -18 + 3x + -3x

Combine like terms: 3x + -3x = 0
42 + 6x = -18 + 0
42 + 6x = -18

Add '-42' to each side of the equation.
42 + -42 + 6x = -18 + -42

Combine like terms: 42 + -42 = 0
0 + 6x = -18 + -42
6x = -18 + -42

Combine like terms: -18 + -42 = -60
6x = -60

Divide each side by '6'.
x = -10

Simplifying
x = -10

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