8(7)=r

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Solution for 8(7)=r equation: 



8(7)=r

We move all terms to the left:

8(7)-(r)=0

We add all the numbers together, and all the variables

-1r+87=0

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

-r=-87

r=-87/-1

r=+87

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