Question

heeelp me..........me ajudem ai​

Answer 1

a)

$\sf \frac{9}{5} + \frac{3}{4} = \frac{(36 + 15)}{20} = \frac{51}{20}$

b)

$\sf \frac{23}{9} + \frac{30}{3} = \frac{(23 + 90)}{9} = \frac{113}{9}$

c)

$\sf \frac{12}{5} + \frac{3}{7} = \frac{(84 + 15)}{35} = \frac{99}{35}$