70=30x+100

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Solution for 70=30x+100 equation: 



70=30x+100

We move all terms to the left:

70-(30x+100)=0

We get rid of parentheses

-30x-100+70=0

We add all the numbers together, and all the variables

-30x-30=0

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

-30x=30

x=30/-30

x=-1

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