42=-6(2+r)

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Solution for 42=-6(2+r) equation: 



42=-6(2+r)

We move all terms to the left:

42-(-6(2+r))=0

We add all the numbers together, and all the variables

-(-6(r+2))+42=0



We calculate terms in parentheses: -(-6(r+2)), so:

-6(r+2)

We multiply parentheses

-6r-12

Back to the equation:

-(-6r-12)



We get rid of parentheses

6r+12+42=0

We add all the numbers together, and all the variables

6r+54=0

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

6r=-54

r=-54/6

r=-9

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