Question

considere o valores de a e b:
a =1/5
b=1/4
as fracoes resultantes de a+b e a.b sao respectivamente ?

Answer 1

Resposta:

$a + b \\ \frac{1}{5} + \frac{1}{4} \\ \frac{4 + 5}{20} = \frac{9}{20}$

$a \times b \\ \frac{1}{5} \times \frac{1}{4} \\ \frac{1}{5} \times 4 \\ \frac{4}{5}$