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bearhunter [10]
4 years ago
14

Subtract 5 5⁄21 from 131⁄7 (reducing to lowest terms if necessary). A. 1019⁄7 B. 719⁄7 C. 1019⁄21 D. 719⁄21

Mathematics
1 answer:
defon4 years ago
6 0

13\frac{1}{7}-5\frac{5}{21}=13\frac{3}{21}-5\frac{5}{21}=(13-5)+\left(\frac{3}{21}-\frac{5}{21}\right)\\\\=8-\frac{2}{21}=\left(7+\frac{21}{21}\right)-\frac{2}{21}\\\\=7+\frac{21-2}{21}=7\frac{19}{21}

The appropriate choice is ...

... D. 7 19/21

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