5r+8=9r-4

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Solution for 5r+8=9r-4 equation: 



5r+8=9r-4

We move all terms to the left:

5r+8-(9r-4)=0

We get rid of parentheses

5r-9r+4+8=0

We add all the numbers together, and all the variables

-4r+12=0

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

-4r=-12

r=-12/-4

r=+3

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