4(r-1)=r+11

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Solution for 4(r-1)=r+11 equation: 



4(r-1)=r+11

We move all terms to the left:

4(r-1)-(r+11)=0

We multiply parentheses

4r-(r+11)-4=0

We get rid of parentheses

4r-r-11-4=0

We add all the numbers together, and all the variables

3r-15=0

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

3r=15

r=15/3

r=5

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