-4=-7+3r

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



-4=-7+3r

We move all terms to the left:

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

We add all the numbers together, and all the variables

-(3r-7)-4=0

We get rid of parentheses

-3r+7-4=0

We add all the numbers together, and all the variables

-3r+3=0

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

-3r=-3

r=-3/-3

r=1

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