4(4+21)=-3(r-7)

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Solution for 4(4+21)=-3(r-7) equation: 



4(4+21)=-3(r-7)

We move all terms to the left:

4(4+21)-(-3(r-7))=0

We add all the numbers together, and all the variables

-(-3(r-7))+425=0



We calculate terms in parentheses: -(-3(r-7)), so:

-3(r-7)

We multiply parentheses

-3r+21

Back to the equation:

-(-3r+21)



We get rid of parentheses

3r-21+425=0

We add all the numbers together, and all the variables

3r+404=0

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

3r=-404

r=-404/3

r=-134+2/3

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