leleduh leleduh
  • 19-08-2018
  • Mathematics
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paul said that 3 1/5 times 2 3/8 equal 6 3/40 . is paul correct

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gmany
gmany gmany
  • 19-08-2018

Paul is incorrect.

[tex] 3\dfrac{1}{5}\times2\dfrac{3}{8}=\dfrac{3\cdot5+1}{5}\times\dfrac{2\cdot8+3}{8}=\dfrac{16}{5}\times\dfrac{19}{8}=\dfrac{2}{5}\times\dfrac{19}{1}\\\\=\dfrac{38}{5}=7\dfrac{3}{5}\neq6\dfrac{3}{40} [/tex]

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