6x+7x-80=100-7x

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Solution for 6x+7x-80=100-7x equation:


Simplifying
6x + 7x + -80 = 100 + -7x

Reorder the terms:
-80 + 6x + 7x = 100 + -7x

Combine like terms: 6x + 7x = 13x
-80 + 13x = 100 + -7x

Solving
-80 + 13x = 100 + -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 + 13x + 7x = 100 + -7x + 7x

Combine like terms: 13x + 7x = 20x
-80 + 20x = 100 + -7x + 7x

Combine like terms: -7x + 7x = 0
-80 + 20x = 100 + 0
-80 + 20x = 100

Add '80' to each side of the equation.
-80 + 80 + 20x = 100 + 80

Combine like terms: -80 + 80 = 0
0 + 20x = 100 + 80
20x = 100 + 80

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

Divide each side by '20'.
x = 9

Simplifying
x = 9

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