8j+4=13j-21

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Solution for 8j+4=13j-21 equation: 



8j+4=13j-21

We move all terms to the left:

8j+4-(13j-21)=0

We get rid of parentheses

8j-13j+21+4=0

We add all the numbers together, and all the variables

-5j+25=0

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

-5j=-25

j=-25/-5

j=+5

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