4(r-83)=28

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Solution for 4(r-83)=28 equation: 



4(r-83)=28

We move all terms to the left:

4(r-83)-(28)=0

We multiply parentheses

4r-332-28=0

We add all the numbers together, and all the variables

4r-360=0

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

4r=360

r=360/4

r=90

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