-11r+8=10r-13

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Solution for -11r+8=10r-13 equation: 



-11r+8=10r-13

We move all terms to the left:

-11r+8-(10r-13)=0

We get rid of parentheses

-11r-10r+13+8=0

We add all the numbers together, and all the variables

-21r+21=0

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

-21r=-21

r=-21/-21

r=1

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