Question

Resolva as operações com numeros mistos A)2 1/3 + 2 3/5 B)1 2/7 + 1 1/3 C)2 3/5 + 3 5/11

Answer 1

Explicação passo-a-passo:

a)

$\sf 2~\dfrac{1}{3}+2~\dfrac{3}{5}$

$\sf =4+\dfrac{1}{3}+\dfrac{3}{5}$

$\sf =4+\dfrac{5+9}{15}$

$\sf =4+\dfrac{14}{15}$

$\sf =4~\dfrac{14}{15}$

b)

$\sf 1~\dfrac{2}{7}+1~\dfrac{1}{3}$

$\sf =2+\dfrac{2}{7}+\dfrac{1}{3}$

$\sf =2+\dfrac{6+7}{21}$

$\sf =2+\dfrac{13}{21}$

$\sf =2~\dfrac{13}{21}$

c)

$\sf 2~\dfrac{3}{5}+3~\dfrac{5}{11}$

$\sf =5+\dfrac{3}{5}+\dfrac{5}{11}$

$\sf =5+\dfrac{33+25}{55}$

$\sf =5+\dfrac{58}{55}$

$\sf =5+1+\dfrac{3}{55}$

$\sf =6+\dfrac{3}{55}$

$\sf =6~\dfrac{3}{55}$

Answer 2

Oie, Td Bom?!

A)

= 2 1/3 + 2 3/5

= (2 + 2) + (1/3 + 3/5)

= (2 + 2) + ([5 + 9]/15)

= 4 + 14/15

= 4 14/15

B)

= 1 2/7 + 1 1/3

= (1 + 1) + (2/7 + 1/3)

= (1 + 1) + ([6 + 7]/21)

= 2 + 13/21

= 2 13/21

C)

= 2 3/5 + 3 5/11

= (2 + 3) + (3/5 + 5/11)

= (2 + 3) + ([33 + 25]/55)

= 5 + 58/55

= 5 + 1 3/55

= 5 + 1 + 3/55

= 6 + 3/55

= 6 3/55

Att. Makaveli1996