Question

efectuati;a)7pe11imultit 3pe4 b)5pe18inmultit 7pe10 c)3pe20inmultit 5pe6 

Answer 1

$\frac{7}{11}$×$\frac{3}{4}$=$\frac{21}{44}$

$\frac{5}{18}$×$\frac{7}{10}$=$\frac{7}{36}$

$\frac{3}{20}$×$\frac{5}{6}$=$\frac{1}{8}$

Answer 2

1)$\frac{ ^{4} 7}{11} .\frac{ ^{11} 3 }{4} = \frac{28*33}{44} = \frac{28*3}{4} = \frac{84 ^{4} }{4} = \frac{21}{1} =21$
2)$\frac{5}{18} * \frac{7}{10} = \frac{5*126}{18} = \frac{630}{18} =35$
3)$\frac{3}{20} * \frac{5}{6} = \frac{9*5}{6} = \frac{45}{6}=7 \frac{5}{6}$
sper ca team ajutat