100=80x+20

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Solution for 100=80x+20 equation: 



100=80x+20

We move all terms to the left:

100-(80x+20)=0

We get rid of parentheses

-80x-20+100=0

We add all the numbers together, and all the variables

-80x+80=0

We move all terms containing x to the left, all other terms to the right

-80x=-80

x=-80/-80

x=1

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