-90+6x+3x=54

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Solution for -90+6x+3x=54 equation: 


Simplifying
-90 + 6x + 3x = 54

Combine like terms: 6x + 3x = 9x
-90 + 9x = 54

Solving
-90 + 9x = 54

Solving for variable 'x'.

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

Add '90' to each side of the equation.
-90 + 90 + 9x = 54 + 90

Combine like terms: -90 + 90 = 0
0 + 9x = 54 + 90
9x = 54 + 90

Combine like terms: 54 + 90 = 144
9x = 144

Divide each side by '9'.
x = 16

Simplifying
x = 16

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