100=80-8x

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Solution for 100=80-8x equation:


Simplifying
100 = 80 + -8x

Solving
100 = 80 + -8x

Solving for variable 'x'.

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

Add '8x' to each side of the equation.
100 + 8x = 80 + -8x + 8x

Combine like terms: -8x + 8x = 0
100 + 8x = 80 + 0
100 + 8x = 80

Add '-100' to each side of the equation.
100 + -100 + 8x = 80 + -100

Combine like terms: 100 + -100 = 0
0 + 8x = 80 + -100
8x = 80 + -100

Combine like terms: 80 + -100 = -20
8x = -20

Divide each side by '8'.
x = -2.5

Simplifying
x = -2.5

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