Find ab/c if a = 1 3/4, b = 2 1/5, and c = 3 1/2
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\(\dfrac{ab}{c}=\dfrac{\dfrac{7}{4}\cdot \dfrac{11}{5}}{\dfrac{7}{2}}=\dfrac{\dfrac{77}{20}}{\dfrac{7}{2}} =\dfrac{77\cdot 2}{20\cdot 7}=\color{blue}\dfrac{11}{10}\)
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