Question

simplifique as fraçoes
45/63
75/30
42/105

Answer 1

45/63 (ambos divisíveis por 3): 15/21 -> 5/7
75/30 -> 25/10 -> 5/2
42/105 -> 14/35 -> 2/5

Answer 2

$\frac{45}{63} : 9 = \frac{5}{7}$

$\frac{75}{30} :15 = \frac{5}{2}$

$\frac{42}{105} :7 = \frac{6}{15} : 3 = \frac{2}{5}$