1=0.7x-20

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Solution for 1=0.7x-20 equation: 



1=0.7x-20

We move all terms to the left:

1-(0.7x-20)=0

We get rid of parentheses

-0.7x+20+1=0

We add all the numbers together, and all the variables

-0.7x+21=0

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

-0.7x=-21

x=-21/-0.7

x=+30

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