Question

Resolva as operações com frações:
a) 1/5 + 2/7=
b) 3/4 - 1/3=
c) 2/9 x 5/8=
d) 1/3 : 2/4=

Answer 1

Explicação passo-a-passo:

.

$\dfrac{1}{5} + \dfrac{2}{7}$

$\dfrac{7 + 10}{35}$

$\dfrac{17}{35}$

.

$\dfrac{3}{4} - \dfrac{1}{3}$

$\dfrac{9 - 4}{12}$

$\dfrac{5}{12}$

.

$\dfrac{2}{9} \times \dfrac{5}{8}$

$\dfrac{10 \div 2}{72 \div 2}$

$\dfrac{5}{36}$

.

$\dfrac{1}{3} \div \dfrac{2}{4}$

$\dfrac{1}{3} \times \dfrac{4}{2}$

$\dfrac{4 \div 2}{6 \div 2}$

$\dfrac{2}{3}$