Question

calcule:

a)1/4 de 3/5

b)3 1/2 de 2 1/6

c)7/8 de 40/49

d)4/5 de 1 2/7​

Answer 1

a)

$\frac{1}{4} \times \frac{3}{5} = \frac{3}{20}$

b)

$(3 \times \frac{1}{2} ) \times (2 \times \frac{1}{6} ) = \frac{3}{2} \times \frac{2}{6} =$

$= \frac{6}{12} = \frac{1}{2}$

c)

$\frac{7}{8} \times \frac{40}{49} = \frac{280}{392} = \frac{5}{7}$

d)

$\frac{4}{5 } \times (1 \times \frac{2}{7}) = \frac{4}{5} \times \frac{2}{7} = \frac{8}{35}$