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lmgarrett71 lmgarrett71
  • 09-11-2014
  • Mathematics
Answered

Multiply the numbers and simplify the answer: 3 x 1- 3/4

Verified Answer :

Anonymous Anonymous
  • 09-11-2014

\(\underbrace{3\times1}_{first}-\frac{3}{4}=3-\frac{3}{4}=2\frac{1}{4}\)

\(3\times1\frac{3}{4}=3\times\frac{1\times4+3}{4}=3\times\frac{4+3}{4}=\frac{3}{1}\times\frac{7}{4}=\frac{3\times7}{4}=\frac{21}{4}=\frac{20+1}{4}=\frac{20}{4}+\frac{1}{4}\\\center\boxed{=5\frac{1}{4}}\)

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