Question

Calcule os resultados dos cálculos abaixo:​

Answer 1

Resposta:

a)

$\frac{7}{5} \times \frac{3}{5} = \frac{21}{25}$

b)

$\frac{4}{8} + \frac{2}{8} = \frac{6}{8}$

c)

$\frac{3}{4} + \frac{5}{12 } = \\ \\ m.m.c.(4.12) = 12 \\ \\ \frac{9}{12} + \frac{5}{12} = \frac{14}{12}$

d)

$\frac{7}{9} \times \frac{9}{7} = \frac{63}{63}$

e)

$\frac{1}{4} \times \frac{2}{3} = \frac{2}{12}$

f)

$\frac{1}{4} \div \frac{4}{7} = \frac{1}{4} \times \frac{7}{4} = \frac{7}{16}$