Question

Urgente!

Resolva as operações com as frações apresentadas a seguir .​

Answer 1

Resposta:

Explicação passo-a-passo:

a)

$\frac{2}{3}+\frac{1}{2}=\frac{2.2+3.1}{6}=\frac{4+3}{6}=\frac{7}{6}$

b)

$\frac{7}{8}-\frac{1}{4}=\frac{7-2.1}{8}=\frac{5}{8}$

c)

$3\frac{1}{2}-\frac{3}{4}=\frac{6+1}{2}-\frac{3}{4}=\frac{7}{2}-\frac{3}{4}=\frac{2.7-3}{4}=\frac{11}{4}$

d)

$\frac{11}{3}+1\frac{2}{9}=\frac{11}{3}+\frac{9.1+2}{9}=\frac{11}{3}+\frac{11}{9}=\frac{3.11+11}{9}=\frac{44}{9}$

e)

$4\frac{1}{2}+\frac{3}{4}-\frac{5}{6}=\frac{2.4+1}{2}+\frac{3}{4}-\frac{5}{6}=\frac{9}{2}+\frac{3}{4}-\frac{5}{6}=\frac{6.9+3.3-2.5}{12}=\frac{54+9-10}{12}=\frac{54+9-10}{12}=\frac{53}{12}$