80=(x+9)+(6x-6)

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Solution for 80=(x+9)+(6x-6) equation:


Simplifying
80 = (x + 9) + (6x + -6)

Reorder the terms:
80 = (9 + x) + (6x + -6)

Remove parenthesis around (9 + x)
80 = 9 + x + (6x + -6)

Reorder the terms:
80 = 9 + x + (-6 + 6x)

Remove parenthesis around (-6 + 6x)
80 = 9 + x + -6 + 6x

Reorder the terms:
80 = 9 + -6 + x + 6x

Combine like terms: 9 + -6 = 3
80 = 3 + x + 6x

Combine like terms: x + 6x = 7x
80 = 3 + 7x

Solving
80 = 3 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
80 + -7x = 3 + 7x + -7x

Combine like terms: 7x + -7x = 0
80 + -7x = 3 + 0
80 + -7x = 3

Add '-80' to each side of the equation.
80 + -80 + -7x = 3 + -80

Combine like terms: 80 + -80 = 0
0 + -7x = 3 + -80
-7x = 3 + -80

Combine like terms: 3 + -80 = -77
-7x = -77

Divide each side by '-7'.
x = 11

Simplifying
x = 11

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