(4x-8)+(8x+20)=90

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Solution for (4x-8)+(8x+20)=90 equation:


Simplifying
(4x + -8) + (8x + 20) = 90

Reorder the terms:
(-8 + 4x) + (8x + 20) = 90

Remove parenthesis around (-8 + 4x)
-8 + 4x + (8x + 20) = 90

Reorder the terms:
-8 + 4x + (20 + 8x) = 90

Remove parenthesis around (20 + 8x)
-8 + 4x + 20 + 8x = 90

Reorder the terms:
-8 + 20 + 4x + 8x = 90

Combine like terms: -8 + 20 = 12
12 + 4x + 8x = 90

Combine like terms: 4x + 8x = 12x
12 + 12x = 90

Solving
12 + 12x = 90

Solving for variable 'x'.

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

Add '-12' to each side of the equation.
12 + -12 + 12x = 90 + -12

Combine like terms: 12 + -12 = 0
0 + 12x = 90 + -12
12x = 90 + -12

Combine like terms: 90 + -12 = 78
12x = 78

Divide each side by '12'.
x = 6.5

Simplifying
x = 6.5

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