25=7r-4r

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Solution for 25=7r-4r equation: 



25=7r-4r

We move all terms to the left:

25-(7r-4r)=0

We add all the numbers together, and all the variables

-(+3r)+25=0

We get rid of parentheses

-3r+25=0

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

-3r=-25

r=-25/-3

r=8+1/3

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