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154=-4(8+6r)=24r
We move all terms to the left:
154-(-4(8+6r))=0
We add all the numbers together, and all the variables
-(-4(6r+8))+154=0
We calculate terms in parentheses: -(-4(6r+8)), so:We get rid of parentheses
-4(6r+8)
We multiply parentheses
-24r-32
Back to the equation:
-(-24r-32)
24r+32+154=0
We add all the numbers together, and all the variables
24r+186=0
We move all terms containing r to the left, all other terms to the right
24r=-186
r=-186/24
r=-7+3/4
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