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A jar contains 8 4/9 pounds of jam. If Sam eats 3 2/5 pounds of the jam, how many pounds of jam remains in the jar?
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A jar contains 8 4/9 pounds of jam. If Sam eats 3 2/5 pounds of the jam, how many pounds of jam remains in the jar?

User Cameron Lee
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\bf 8(4)/(9)\implies \cfrac{8\cdot 9+4}{9}\implies \cfrac{76}{9} \\\\\\ 3(2)/(5)\implies \cfrac{3\cdot 5+2}{5}\implies \cfrac{17}{5}\\\\ -------------------------------\\\\ \cfrac{76}{9}-\cfrac{17}{5}\impliedby \textit{let's use an LCD of 45}\implies \cfrac{5\cdot 76-9\cdot 17}{45} \\\\\\ \cfrac{380-153}{45}\implies \cfrac{227}{45}\implies \boxed{5(2)/(45)} \\\\\\ 5(2)/(45)\implies \cfrac{5\cdot 45+2}{45}\implies \cfrac{227}{45}
User Yegoshin Maxim
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