Question

решите:
3/8-1/7=?
11/80-11/90
2/5*3/8
5*2/11
4/5:2/15
3/11:9
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Answer 1

13/56, 11/720, 3/20, 10/11, 6, 1/33

Answer 2

$\frac{3}{8} - \frac{1}{7} = \frac{21-8}{56} = \frac{13}{56}$
$\frac{11}{80} - \frac{11}{90} = \frac{99-88}{720}= \frac{11}{720}$
$\frac{2}{5} * \frac{3}{8} = \frac{2*3}{5*8} = \frac{3}{20}$
$5* \frac{2}{11} = \frac{10}{11}$
$\frac{4}{5}$÷$\frac{2}{15} = \frac{4*15}{5*2} =6$
$\frac{3}{11}$÷9=$\frac{3}{99} = \frac{1}{33}$