1-3r=-4r-9+7

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Solution for 1-3r=-4r-9+7 equation: 



1-3r=-4r-9+7

We move all terms to the left:

1-3r-(-4r-9+7)=0

We add all the numbers together, and all the variables

-3r-(-4r-2)+1=0

We get rid of parentheses

-3r+4r+2+1=0

We add all the numbers together, and all the variables

r+3=0

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

r=-3

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