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370=-7(4+7r)+6
We move all terms to the left:
370-(-7(4+7r)+6)=0
We add all the numbers together, and all the variables
-(-7(7r+4)+6)+370=0
We calculate terms in parentheses: -(-7(7r+4)+6), so:We get rid of parentheses
-7(7r+4)+6
We multiply parentheses
-49r-28+6
We add all the numbers together, and all the variables
-49r-22
Back to the equation:
-(-49r-22)
49r+22+370=0
We add all the numbers together, and all the variables
49r+392=0
We move all terms containing r to the left, all other terms to the right
49r=-392
r=-392/49
r=-8
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