Question

Encontre os resultados das operações com frações listadas
abaixo:
(a) 7/5 + 2/3

(b)3/4 + 5/6

(c)4/8 + 2/3

(d)1/2 + 3/4 + 5/8

(e)3/7 - 1/6

(f)1/8 - 1/9

(g)7/5 - 2/3

(h)3/5 - 1/2

Answer 1

Resposta:

$\text{Leia abaixo}$

Explicação passo-a-passo:

$a)\:\dfrac{7}{5} + \dfrac{2}{3} = \dfrac{21 + 10}{15} = \dfrac{31}{15}$

$b)\:\dfrac{3}{4} + \dfrac{5}{6} = \dfrac{9 + 10}{12} = \dfrac{19}{12}$

$c)\:\dfrac{4}{8} + \dfrac{2}{3} = \dfrac{12 + 16}{24} = \dfrac{28}{24} = \dfrac{7}{6}$

$d)\:\dfrac{1}{2} + \dfrac{3}{4} + \dfrac{5}{8} = \dfrac{4 + 6 + 5}{8} = \dfrac{15}{8}$

$e)\:\dfrac{3}{7} - \dfrac{1}{6} = \dfrac{18 - 7}{42} = \dfrac{11}{42}$

$f)\:\dfrac{1}{8} - \dfrac{1}{9} = \dfrac{9 - 8}{72} = \dfrac{1}{72}$

$g)\:\dfrac{7}{5} - \dfrac{2}{3} = \dfrac{21 - 10}{15} = \dfrac{11}{15}$

$h)\:\dfrac{3}{5} - \dfrac{1}{2} = \dfrac{6 - 5}{10} = \dfrac{1}{10}$