Question

4. Efectuați:


a) 12/20 • 4/6• 5/22
b) 22/36 • 1/3• 81/11
c) 50/26•1/10•2/15
d) 3| 1/4 • 1 |1/3•1/13

explicatie pas cu pas pe hartie va rog!!
Dau coroniță și punctaj maxim!!
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Answer 1

$\frac{12}{20} \times \frac{4}{6} \times \frac{5}{22} = \frac{2}{5} \times \frac{1}{2} \times \frac{5}{22} = \frac{1}{22} \\ \frac{22}{36} \times \frac{1}{3} \times \frac{81}{11} = \frac{2}{36} \times \frac{1}{1} \times \frac{27}{1} = \frac{1}{18} \times \frac{27}{1} = \frac{9}{6} = \frac{3}{2} \\ \frac{50}{26} \times \frac{1}{10} \times \frac{2}{15} = \frac{1}{13} \times \frac{1}{1} \times \frac{1}{3} = \frac{1}{39}$