7=r/5+4

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Solution for 7=r/5+4 equation: 



7=r/5+4

We move all terms to the left:

7-(r/5+4)=0

We get rid of parentheses

-r/5-4+7=0

We multiply all the terms by the denominator


-r-4*5+7*5=0

We add all the numbers together, and all the variables

-1r+15=0

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

-r=-15

r=-15/-1

r=+15

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