100=80+4x+x

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Solution for 100=80+4x+x equation:


Simplifying
100 = 80 + 4x + x

Combine like terms: 4x + x = 5x
100 = 80 + 5x

Solving
100 = 80 + 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.
100 + -5x = 80 + 5x + -5x

Combine like terms: 5x + -5x = 0
100 + -5x = 80 + 0
100 + -5x = 80

Add '-100' to each side of the equation.
100 + -100 + -5x = 80 + -100

Combine like terms: 100 + -100 = 0
0 + -5x = 80 + -100
-5x = 80 + -100

Combine like terms: 80 + -100 = -20
-5x = -20

Divide each side by '-5'.
x = 4

Simplifying
x = 4

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