-2r-4=7r+5

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Solution for -2r-4=7r+5 equation: 



-2r-4=7r+5

We move all terms to the left:

-2r-4-(7r+5)=0

We get rid of parentheses

-2r-7r-5-4=0

We add all the numbers together, and all the variables

-9r-9=0

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

-9r=9

r=9/-9

r=-1

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