Question

Calcule
A) 12/5 x 8/9
B) 12/5 : 8/9
C) 8/9 x 1/5
D) 1/5 x 8/9

Answer 1

Resposta:

A) $\frac{32}{15}$  B) $\frac{27}{10}$  C) $\frac{8}{45}$  D) $\frac{8}{45}$

Explicação passo-a-passo:

$A) \frac{12}{5} .\frac{8}{9} = \frac{12.8}{5.9}= \frac{4.8}{5.3} = \frac{32}{15}$

$B) \frac{12}{5}:\frac{8}{9} = \frac{12}{5}.\frac{9}{8} = \frac{6}{5}.\frac{9}{4} = \frac{3}{5}.\frac{9}{2} = \frac{3.9}{5.2} = \frac{27}{10}$

$C) \frac{8}{9}.\frac{1}{5} = \frac{8.1}{9.5} = \frac{8}{45}$

$D) \frac{1}{5}.\frac{8}{9} = \frac{1.8}{5.9} = \frac{8}{45}$