180=100-x+30+4x+7x

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Solution for 180=100-x+30+4x+7x equation: 


Simplifying
180 = 100 + -1x + 30 + 4x + 7x

Reorder the terms:
180 = 100 + 30 + -1x + 4x + 7x

Combine like terms: 100 + 30 = 130
180 = 130 + -1x + 4x + 7x

Combine like terms: -1x + 4x = 3x
180 = 130 + 3x + 7x

Combine like terms: 3x + 7x = 10x
180 = 130 + 10x

Solving
180 = 130 + 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.
180 + -10x = 130 + 10x + -10x

Combine like terms: 10x + -10x = 0
180 + -10x = 130 + 0
180 + -10x = 130

Add '-180' to each side of the equation.
180 + -180 + -10x = 130 + -180

Combine like terms: 180 + -180 = 0
0 + -10x = 130 + -180
-10x = 130 + -180

Combine like terms: 130 + -180 = -50
-10x = -50

Divide each side by '-10'.
x = 5

Simplifying
x = 5

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