8r-(r-4)=11

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Solution for 8r-(r-4)=11 equation: 



8r-(r-4)=11

We move all terms to the left:

8r-(r-4)-(11)=0

We get rid of parentheses

8r-r+4-11=0

We add all the numbers together, and all the variables

7r-7=0

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

7r=7

r=7/7

r=1

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