9x+18=3x+90

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Solution for 9x+18=3x+90 equation:


Simplifying
9x + 18 = 3x + 90

Reorder the terms:
18 + 9x = 3x + 90

Reorder the terms:
18 + 9x = 90 + 3x

Solving
18 + 9x = 90 + 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 = 90 + 3x + -3x

Combine like terms: 9x + -3x = 6x
18 + 6x = 90 + 3x + -3x

Combine like terms: 3x + -3x = 0
18 + 6x = 90 + 0
18 + 6x = 90

Add '-18' to each side of the equation.
18 + -18 + 6x = 90 + -18

Combine like terms: 18 + -18 = 0
0 + 6x = 90 + -18
6x = 90 + -18

Combine like terms: 90 + -18 = 72
6x = 72

Divide each side by '6'.
x = 12

Simplifying
x = 12

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