100=7.5*x

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Solution for 100=7.5*x equation: 



100=7.5x

We move all terms to the left:

100-(7.5x)=0

We add all the numbers together, and all the variables

-(+7.5x)+100=0

We get rid of parentheses

-7.5x+100=0

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

-7.5x=-100

x=-100/-7.5

x=13+2.5/7.5

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