7x+18=90-2x

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Solution for 7x+18=90-2x equation:


Simplifying
7x + 18 = 90 + -2x

Reorder the terms:
18 + 7x = 90 + -2x

Solving
18 + 7x = 90 + -2x

Solving for variable 'x'.

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

Add '2x' to each side of the equation.
18 + 7x + 2x = 90 + -2x + 2x

Combine like terms: 7x + 2x = 9x
18 + 9x = 90 + -2x + 2x

Combine like terms: -2x + 2x = 0
18 + 9x = 90 + 0
18 + 9x = 90

Add '-18' to each side of the equation.
18 + -18 + 9x = 90 + -18

Combine like terms: 18 + -18 = 0
0 + 9x = 90 + -18
9x = 90 + -18

Combine like terms: 90 + -18 = 72
9x = 72

Divide each side by '9'.
x = 8

Simplifying
x = 8

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