r=2-7

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Solution for r=2-7 equation: 



r=2-7

We move all terms to the left:

r-(2-7)=0

We add all the numbers together, and all the variables

r-(-5)=0

We add all the numbers together, and all the variables

r+5=0

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

r=-5

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