90=(6x)+(x+20)+(8x+10)

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Solution for 90=(6x)+(x+20)+(8x+10) equation: 


Simplifying
90 = (6x) + (x + 20) + (8x + 10)

Reorder the terms:
90 = (6x) + (20 + x) + (8x + 10)

Remove parenthesis around (20 + x)
90 = (6x) + 20 + x + (8x + 10)

Reorder the terms:
90 = (6x) + 20 + x + (10 + 8x)

Remove parenthesis around (10 + 8x)
90 = (6x) + 20 + x + 10 + 8x

Reorder the terms:
90 = 20 + 10 + (6x) + x + 8x

Combine like terms: 20 + 10 = 30
90 = 30 + (6x) + x + 8x

Combine like terms: (6x) + x = 7x
90 = 30 + 7x + 8x

Combine like terms: 7x + 8x = 15x
90 = 30 + 15x

Solving
90 = 30 + 15x

Solving for variable 'x'.

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

Add '-15x' to each side of the equation.
90 + -15x = 30 + 15x + -15x

Combine like terms: 15x + -15x = 0
90 + -15x = 30 + 0
90 + -15x = 30

Add '-90' to each side of the equation.
90 + -90 + -15x = 30 + -90

Combine like terms: 90 + -90 = 0
0 + -15x = 30 + -90
-15x = 30 + -90

Combine like terms: 30 + -90 = -60
-15x = -60

Divide each side by '-15'.
x = 4

Simplifying
x = 4

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