70=2(j+20)

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Solution for 70=2(j+20) equation: 



70=2(j+20)

We move all terms to the left:

70-(2(j+20))=0



We calculate terms in parentheses: -(2(j+20)), so:

2(j+20)

We multiply parentheses

2j+40

Back to the equation:

-(2j+40)



We get rid of parentheses

-2j-40+70=0

We add all the numbers together, and all the variables

-2j+30=0

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

-2j=-30

j=-30/-2

j=+15

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