9x+18=81-3x

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Solution for 9x+18=81-3x equation:


Simplifying
9x + 18 = 81 + -3x

Reorder the terms:
18 + 9x = 81 + -3x

Solving
18 + 9x = 81 + -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 + 9x + 3x = 81 + -3x + 3x

Combine like terms: 9x + 3x = 12x
18 + 12x = 81 + -3x + 3x

Combine like terms: -3x + 3x = 0
18 + 12x = 81 + 0
18 + 12x = 81

Add '-18' to each side of the equation.
18 + -18 + 12x = 81 + -18

Combine like terms: 18 + -18 = 0
0 + 12x = 81 + -18
12x = 81 + -18

Combine like terms: 81 + -18 = 63
12x = 63

Divide each side by '12'.
x = 5.25

Simplifying
x = 5.25

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