-28+10r-5r=42

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Solution for -28+10r-5r=42 equation: 



-28+10r-5r=42

We move all terms to the left:

-28+10r-5r-(42)=0

We add all the numbers together, and all the variables

5r-70=0

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

5r=70

r=70/5

r=14

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