3-6r=-87

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Solution for 3-6r=-87 equation: 



3-6r=-87

We move all terms to the left:

3-6r-(-87)=0

We add all the numbers together, and all the variables

-6r+90=0

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

-6r=-90

r=-90/-6

r=+15

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