3(r+10)=75

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Solution for 3(r+10)=75 equation: 



3(r+10)=75

We move all terms to the left:

3(r+10)-(75)=0

We multiply parentheses

3r+30-75=0

We add all the numbers together, and all the variables

3r-45=0

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

3r=45

r=45/3

r=15

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