kevy1515
kevy1515 kevy1515
  • 04-01-2017
  • Mathematics
contestada

What step do I do first

What step do I do first class=

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Shyannd2016 Shyannd2016
  • 04-01-2017
1st you change them to improper, 2nd you make the denominators match by multiplying and 3rd you subtract! I hope this helped!!
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Apocrophon
Apocrophon Apocrophon
  • 04-01-2017
First, find the lowest common denominator, or LCD;
Here, the lowest common denominator is 24;
[tex]3 \frac{3}{8} -1 \frac{7}{12} \\ \frac{3}{3} ( \frac{27}{8}) - ( \frac{2}{2} )\frac{19}{12} \\ \frac{3*27}{3*8} - \frac{2*19}{2*12}\\ \frac{81}{24} - \frac{38}{24} \\ 24*( \frac{81-38}{24} )\\ 81-38\\ 43[/tex]
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