3x-8+5x-12=90

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Solution for 3x-8+5x-12=90 equation:


Simplifying
3x + -8 + 5x + -12 = 90

Reorder the terms:
-8 + -12 + 3x + 5x = 90

Combine like terms: -8 + -12 = -20
-20 + 3x + 5x = 90

Combine like terms: 3x + 5x = 8x
-20 + 8x = 90

Solving
-20 + 8x = 90

Solving for variable 'x'.

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

Add '20' to each side of the equation.
-20 + 20 + 8x = 90 + 20

Combine like terms: -20 + 20 = 0
0 + 8x = 90 + 20
8x = 90 + 20

Combine like terms: 90 + 20 = 110
8x = 110

Divide each side by '8'.
x = 13.75

Simplifying
x = 13.75

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