4(r+20)=380

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Solution for 4(r+20)=380 equation: 



4(r+20)=380

We move all terms to the left:

4(r+20)-(380)=0

We multiply parentheses

4r+80-380=0

We add all the numbers together, and all the variables

4r-300=0

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

4r=300

r=300/4

r=75

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