r/10=-2

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Solution for r/10=-2 equation: 



r/10=-2

We move all terms to the left:

r/10-(-2)=0

We add all the numbers together, and all the variables

r/10+2=0

We multiply all the terms by the denominator


r+2*10=0

We add all the numbers together, and all the variables

r+20=0

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

r=-20

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