5x+100=15x+20

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Solution for 5x+100=15x+20 equation: 



5x+100=15x+20

We move all terms to the left:

5x+100-(15x+20)=0

We get rid of parentheses

5x-15x-20+100=0

We add all the numbers together, and all the variables

-10x+80=0

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

-10x=-80

x=-80/-10

x=+8

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