100=x+(180-3x)

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Solution for 100=x+(180-3x) equation:


Simplifying
100 = x + (180 + -3x)

Remove parenthesis around (180 + -3x)
100 = x + 180 + -3x

Reorder the terms:
100 = 180 + x + -3x

Combine like terms: x + -3x = -2x
100 = 180 + -2x

Solving
100 = 180 + -2x

Solving for variable 'x'.

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

Add '2x' to each side of the equation.
100 + 2x = 180 + -2x + 2x

Combine like terms: -2x + 2x = 0
100 + 2x = 180 + 0
100 + 2x = 180

Add '-100' to each side of the equation.
100 + -100 + 2x = 180 + -100

Combine like terms: 100 + -100 = 0
0 + 2x = 180 + -100
2x = 180 + -100

Combine like terms: 180 + -100 = 80
2x = 80

Divide each side by '2'.
x = 40

Simplifying
x = 40

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