90=54+(3x+12)

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Solution for 90=54+(3x+12) equation:


Simplifying
90 = 54 + (3x + 12)

Reorder the terms:
90 = 54 + (12 + 3x)

Remove parenthesis around (12 + 3x)
90 = 54 + 12 + 3x

Combine like terms: 54 + 12 = 66
90 = 66 + 3x

Solving
90 = 66 + 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.
90 + -3x = 66 + 3x + -3x

Combine like terms: 3x + -3x = 0
90 + -3x = 66 + 0
90 + -3x = 66

Add '-90' to each side of the equation.
90 + -90 + -3x = 66 + -90

Combine like terms: 90 + -90 = 0
0 + -3x = 66 + -90
-3x = 66 + -90

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

Divide each side by '-3'.
x = 8

Simplifying
x = 8

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