-5(r-5)=21-6r

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Solution for -5(r-5)=21-6r equation: 



-5(r-5)=21-6r

We move all terms to the left:

-5(r-5)-(21-6r)=0

We add all the numbers together, and all the variables

-5(r-5)-(-6r+21)=0

We multiply parentheses

-5r-(-6r+21)+25=0

We get rid of parentheses

-5r+6r-21+25=0

We add all the numbers together, and all the variables

r+4=0

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

r=-4

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