7(j-77)=91

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Solution for 7(j-77)=91 equation: 



7(j-77)=91

We move all terms to the left:

7(j-77)-(91)=0

We multiply parentheses

7j-539-91=0

We add all the numbers together, and all the variables

7j-630=0

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

7j=630

j=630/7

j=90

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