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5 votes
How much greater is the weight of the large box at 3/4lb than the small box at
1 1/8lbs

1 Answer

7 votes
well, is just their difference, let's first convert the mixed fraction to "improper" and then subtract.


\bf \stackrel{mixed}{1(1)/(8)}\implies \cfrac{1\cdot 8+1}{8}\implies \stackrel{improper}{\cfrac{9}{8}}\\\\ -------------------------------\\\\ \cfrac{9}{8}-\cfrac{3}{4}\impliedby \textit{our LCD is then 8}\implies \cfrac{(1\cdot 9)~~-~~(2\cdot 3)}{8} \\\\\\ \cfrac{9-6}{8}\implies \cfrac{3}{8}
User Gazzini
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