Question

some as frações com denominadores iguais: 3/5+1/5 1/20+13/20 3/11+2/11 5/18+7/18

Answer 1

Resposta:

$a)\\ \\ \frac{3}{5}+ \frac{1}{5} =\frac{3+1}{5} =\frac{4}{5} \\ \\ b)\\ \\ \frac{1}{20}+\frac{13}{20} =\frac{1+13}{20}=\frac{14}{20}=\frac{7}{10} \\ \\ c)\\ \\ \frac{3}{11}+\frac{2}{11} =\frac{3+2}{11} =\frac{5}{11} \\ \\ d)\\ \\ \frac{5}{18}+ \frac{7}{18} =\frac{5+7}{18}= \frac{12}{18} =~~~~~~~~simplifique~por~6~~=~~\frac{2}{3}$