-7=9-r/3

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Solution for -7=9-r/3 equation: 



-7=9-r/3

We move all terms to the left:

-7-(9-r/3)=0

We add all the numbers together, and all the variables

-(-r/3+9)-7=0

We get rid of parentheses

r/3-9-7=0

We multiply all the terms by the denominator


r-9*3-7*3=0

We add all the numbers together, and all the variables

r-48=0

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

r=48

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