7x+18=3x-18

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Solution for 7x+18=3x-18 equation:


Simplifying
7x + 18 = 3x + -18

Reorder the terms:
18 + 7x = 3x + -18

Reorder the terms:
18 + 7x = -18 + 3x

Solving
18 + 7x = -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.
18 + 7x + -3x = -18 + 3x + -3x

Combine like terms: 7x + -3x = 4x
18 + 4x = -18 + 3x + -3x

Combine like terms: 3x + -3x = 0
18 + 4x = -18 + 0
18 + 4x = -18

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

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

Combine like terms: -18 + -18 = -36
4x = -36

Divide each side by '4'.
x = -9

Simplifying
x = -9

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