2(j+4)=20

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Solution for 2(j+4)=20 equation: 



2(j+4)=20

We move all terms to the left:

2(j+4)-(20)=0

We multiply parentheses

2j+8-20=0

We add all the numbers together, and all the variables

2j-12=0

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

2j=12

j=12/2

j=6

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