Question

Calcule as operações:

a) 2/5 + 1/3=

b) 7/9 - 1/6=

c) 5/8+ 7/12=

Me ajudem pfv!

Answer 1

Aqui está a resposta

Answer 2

$\frac{2}{5} + \frac{1}{3} = \frac{2.3+1.5}{15} = \frac{6+5}{15} = \frac{11}{15} \\ \\ \\ \frac{7}{9} - \frac{1}{6} = \frac{7.6-1.9}{54} = \frac{42-9}{54} = \frac{33}{54} \\ \\ \\ mmc 12,8 = 2.2.2.3=24 \\ \\ \\ \frac{5}{8}+ \frac{7}{12} = \frac{3.5+7.2}{24} = \frac{15+14}{24}= \frac{29}{24}$