100=4x-20=2x+30

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Solution for 100=4x-20=2x+30 equation: 



100=4x-20=2x+30

We move all terms to the left:

100-(4x-20)=0

We get rid of parentheses

-4x+20+100=0

We add all the numbers together, and all the variables

-4x+120=0

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

-4x=-120

x=-120/-4

x=+30

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