Question

calculati: 9/7 inmultit 3/5
14/3 : 7/6
16/5 inmultit 3/4 inmultit 2/5
1 intreg 5/8 : 39/72


Coroana te asteapta!

Answer 1

$\frac{9}{7} \times \frac{3}{5} = \frac{9 \times 3}{7 \times 5} = \frac{27}{35} \\ \frac{14}{3} \div \frac{7}{6} = \frac{14}{3} \times \frac{6}{7} = \frac{84}{21} (simpificam \: fr \: cu \: 3) = \frac{28}{7} = 4 \\ \frac{16}{5} \times \frac{3}{4} \times \frac{2}{5} = \frac{16 \times 3 \times 2}{5 \times 4 \times 5} = \frac{96}{100} =$ (simplifica fractia cu 4)=24/25
1 intreg 5/8:38/72
=1·8+5/8 : 38/72=
=13/8:38/72=
=13/8·72/38=
=13·72/8·38=
=936/304(simplifica fr cu 8)=
=117/38