25=7+r.r=

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Solution for 25=7+r.r= equation: 



25=7+r.r=

We move all terms to the left:

25-(7+r.r)=0

We add all the numbers together, and all the variables

-(r.r+7)+25=0

We get rid of parentheses

-r.r-7+25=0

We add all the numbers together, and all the variables

-r.r+18=0

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

-r.r=-18

r=-18/1

r=-18

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