6x+3(-x+18)=90

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Solution for 6x+3(-x+18)=90 equation:


Simplifying
6x + 3(-1x + 18) = 90

Reorder the terms:
6x + 3(18 + -1x) = 90
6x + (18 * 3 + -1x * 3) = 90
6x + (54 + -3x) = 90

Reorder the terms:
54 + 6x + -3x = 90

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

Solving
54 + 3x = 90

Solving for variable 'x'.

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

Add '-54' to each side of the equation.
54 + -54 + 3x = 90 + -54

Combine like terms: 54 + -54 = 0
0 + 3x = 90 + -54
3x = 90 + -54

Combine like terms: 90 + -54 = 36
3x = 36

Divide each side by '3'.
x = 12

Simplifying
x = 12

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