-3(7r-8)=-28-21r

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Solution for -3(7r-8)=-28-21r equation: 



-3(7r-8)=-28-21r

We move all terms to the left:

-3(7r-8)-(-28-21r)=0

We add all the numbers together, and all the variables

-3(7r-8)-(-21r-28)=0

We multiply parentheses

-21r-(-21r-28)+24=0

We get rid of parentheses

-21r+21r+28+24=0

We add all the numbers together, and all the variables

52!=0

There is no solution for this equation

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