Question

simplifique as fraçoes  18/42

24/32

4/20

42/105

Answer 1

Fica assim o resultado final:
3/7
3/4
1/5
2/5

Answer 2

$\frac{18}{42}$ - $\frac{18}{42}$ ÷ 2 = $\frac{9}{21}$ ÷ 2 = $\frac{3}{7}$

$\frac{24}{32}$ - $\frac{24}{32}$ ÷ 2 = $\frac{12}{16}$ ÷ 2 = $\frac{6}{8}$ ÷ 2 = $\frac{3}{4}$

$\frac{4}{20}$ - $\frac{4}{20}$ ÷ 2 = $\frac{2}{10}$ ÷ 2 = $\frac{1}{5}$

$\frac{2}{5}$ - Esta na forma irredutivel

Espero ter ajudado