4(r+15)+4r=300

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Solution for 4(r+15)+4r=300 equation: 



4(r+15)+4r=300

We move all terms to the left:

4(r+15)+4r-(300)=0

We add all the numbers together, and all the variables

4r+4(r+15)-300=0

We multiply parentheses

4r+4r+60-300=0

We add all the numbers together, and all the variables

8r-240=0

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

8r=240

r=240/8

r=30

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