Question

ajuda pfv!!

3º Efetue as operações com frações abaixo:

a)1/3 +1/4

b) 2/5 – 3/2

c) 1/6 ÷1/3

d)1/2 x 2/5​

Answer 1

Explicação passo-a-passo:

.

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

$\dfrac{4 + 3}{12}$

$\dfrac{7}{12}$

.

$\dfrac{2}{5} - \dfrac{3}{2}$

$\dfrac{4 - 15}{10}$

$- \dfrac{11}{10}$

.

$\dfrac{1}{6} \div \dfrac{1}{3}$

$\dfrac{1}{6} \times \dfrac{3}{1}$

$\dfrac{3 \div 3}{6 \div 3}$

$\dfrac{1}{2}$

.

$\dfrac{1}{2} \times \dfrac{2}{5}$

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

$\dfrac{1}{5}$