100=2.5x+x

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Solution for 100=2.5x+x equation: 



100=2.5x+x

We move all terms to the left:

100-(2.5x+x)=0

We add all the numbers together, and all the variables

-(+3.5x)+100=0

We get rid of parentheses

-3.5x+100=0

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

-3.5x=-100

x=-100/-3.5

x=28+2/3.5

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