87=r+44

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Solution for 87=r+44 equation: 



87=r+44

We move all terms to the left:

87-(r+44)=0

We get rid of parentheses

-r-44+87=0

We add all the numbers together, and all the variables

-1r+43=0

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

-r=-43

r=-43/-1

r=+43

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