19+4r=-3(7+2r)

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Solution for 19+4r=-3(7+2r) equation: 



19+4r=-3(7+2r)

We move all terms to the left:

19+4r-(-3(7+2r))=0

We add all the numbers together, and all the variables

4r-(-3(2r+7))+19=0



We calculate terms in parentheses: -(-3(2r+7)), so:

-3(2r+7)

We multiply parentheses

-6r-21

Back to the equation:

-(-6r-21)



We get rid of parentheses

4r+6r+21+19=0

We add all the numbers together, and all the variables

10r+40=0

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

10r=-40

r=-40/10

r=-4

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