4+r=15;r+11

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Solution for 4+r=15;r+11 equation: 



4+r=15r+11

We move all terms to the left:

4+r-(15r+11)=0

We get rid of parentheses

r-15r-11+4=0

We add all the numbers together, and all the variables

-14r-7=0

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

-14r=7

r=7/-14

r=-1/2

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