7x-70=12x+20

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Solution for 7x-70=12x+20 equation: 



7x-70=12x+20

We move all terms to the left:

7x-70-(12x+20)=0

We get rid of parentheses

7x-12x-20-70=0

We add all the numbers together, and all the variables

-5x-90=0

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

-5x=90

x=90/-5

x=-18

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