90=3x+5x-6

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Solution for 90=3x+5x-6 equation:


Simplifying
90 = 3x + 5x + -6

Reorder the terms:
90 = -6 + 3x + 5x

Combine like terms: 3x + 5x = 8x
90 = -6 + 8x

Solving
90 = -6 + 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
90 + -8x = -6 + 8x + -8x

Combine like terms: 8x + -8x = 0
90 + -8x = -6 + 0
90 + -8x = -6

Add '-90' to each side of the equation.
90 + -90 + -8x = -6 + -90

Combine like terms: 90 + -90 = 0
0 + -8x = -6 + -90
-8x = -6 + -90

Combine like terms: -6 + -90 = -96
-8x = -96

Divide each side by '-8'.
x = 12

Simplifying
x = 12

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