7x-20+x+100=180

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Solution for 7x-20+x+100=180 equation:


Simplifying
7x + -20 + x + 100 = 180

Reorder the terms:
-20 + 100 + 7x + x = 180

Combine like terms: -20 + 100 = 80
80 + 7x + x = 180

Combine like terms: 7x + x = 8x
80 + 8x = 180

Solving
80 + 8x = 180

Solving for variable 'x'.

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

Add '-80' to each side of the equation.
80 + -80 + 8x = 180 + -80

Combine like terms: 80 + -80 = 0
0 + 8x = 180 + -80
8x = 180 + -80

Combine like terms: 180 + -80 = 100
8x = 100

Divide each side by '8'.
x = 12.5

Simplifying
x = 12.5

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