3(1+5r)=108

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Solution for 3(1+5r)=108 equation: 



3(1+5r)=108

We move all terms to the left:

3(1+5r)-(108)=0

We add all the numbers together, and all the variables

3(5r+1)-108=0

We multiply parentheses

15r+3-108=0

We add all the numbers together, and all the variables

15r-105=0

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

15r=105

r=105/15

r=7

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