80=x+2x+7x

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Solution for 80=x+2x+7x equation:


Simplifying
80 = x + 2x + 7x

Combine like terms: x + 2x = 3x
80 = 3x + 7x

Combine like terms: 3x + 7x = 10x
80 = 10x

Solving
80 = 10x

Solving for variable 'x'.

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

Add '-10x' to each side of the equation.
80 + -10x = 10x + -10x

Combine like terms: 10x + -10x = 0
80 + -10x = 0

Add '-80' to each side of the equation.
80 + -80 + -10x = 0 + -80

Combine like terms: 80 + -80 = 0
0 + -10x = 0 + -80
-10x = 0 + -80

Combine like terms: 0 + -80 = -80
-10x = -80

Divide each side by '-10'.
x = 8

Simplifying
x = 8

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