Question

Resolva as seguintes frações : a)1/3 + 1/4=
b)3/4 - 2/3=
c)2/5 - 1/3=
d)6/4 - 1/7 + 1/2=

preciso muito de ajuda ​

Answer 1

Resposta:

a)2

b)73

c)31

d)1296

bom estudo !

Answer 2

Explicação passo-a-passo:

.

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

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

$\dfrac{7}{12}$

.

$\dfrac{3}{4} - \dfrac{2}{3}$

$\dfrac{9 - 8}{12}$

$\dfrac{1}{12}$

.

$\dfrac{2}{5} - \dfrac{1}{3}$

$\dfrac{6 - 5}{15}$

$\dfrac{1}{15}$

.

$\dfrac{6}{4} - \dfrac{1}{7} + \dfrac{1}{2}$

$\dfrac{6 \div 2}{4 \div 2} - \dfrac{1}{7} + \dfrac{1}{2}$

$\dfrac{3}{2} - \dfrac{1}{7} + \dfrac{1}{2}$

$\dfrac{3 + 1}{2} - \dfrac{1}{7}$

$\dfrac{4}{2} - \dfrac{1}{7}$

$2 - \dfrac{1}{7}$

$\dfrac{14 - 1}{7}$

$\dfrac{13}{7}$