42=-6r-18

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Solution for 42=-6r-18 equation: 



42=-6r-18

We move all terms to the left:

42-(-6r-18)=0

We get rid of parentheses

6r+18+42=0

We add all the numbers together, and all the variables

6r+60=0

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

6r=-60

r=-60/6

r=-10

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