Question

Efetue os cálculos e simplifique os resultados.
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Answer 1

Explicação passo-a-passo:

$4 \times \frac{5}{8} \\ 1 \times \frac{5}{2} \\ \frac{5}{2}$

$\frac{14}{5} \times \frac{1}{6} \\ \frac{14 \div 2}{30 \div 2} \\ \\ \frac{7}{15}$

$\frac{7}{18} \times 4 \\ \frac{7}{6} \times 1 \\ \frac{7}{6}$

$\frac{12}{5} \times \frac{3}{4} \\ \frac{12 \times 3}{5 \times 4} \\ \frac{36 \div 4}{20 \div 4} \\ \frac{9}{5}$

$\frac{6}{3} \times \frac{7}{2} \\ \frac{6 \times 7}{3 \times 2} \\ \frac{6 \div 6 \times 7}{6 \div 6} \\ 7$

$9 \times \frac{7}{3} \\ 3 \times 7 \\ 21$

Answer 2

Resposta:

Explicação passo a passo:

a) 4 .  5/8 = 20/8  = 5/2

b) 14/5 . 1/6 = 14/30 = 7/15

c) 7/18 . 4 = 28/18 = 14/9

d) 12/5 . 3/4 = 36/20 = 9/5

e) 6/3 . 7/2 =  42/6 = 7

f) 9 . 7/3 = 63/3 = 21