7+7r=-42

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Solution for 7+7r=-42 equation: 



7+7r=-42

We move all terms to the left:

7+7r-(-42)=0

We add all the numbers together, and all the variables

7r+49=0

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

7r=-49

r=-49/7

r=-7

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