3x-18+42=90

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Solution for 3x-18+42=90 equation:


Simplifying
3x + -18 + 42 = 90

Reorder the terms:
-18 + 42 + 3x = 90

Combine like terms: -18 + 42 = 24
24 + 3x = 90

Solving
24 + 3x = 90

Solving for variable 'x'.

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

Add '-24' to each side of the equation.
24 + -24 + 3x = 90 + -24

Combine like terms: 24 + -24 = 0
0 + 3x = 90 + -24
3x = 90 + -24

Combine like terms: 90 + -24 = 66
3x = 66

Divide each side by '3'.
x = 22

Simplifying
x = 22

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