Question

11-Efetue as
operações com as frações:

a)3/10+2/5

b) 2 + 5/12

c)1/3 + 5/12 + 10/15

d)2 - 5/12

e)2/3 + 4/10 +1/15

f) 10/12 - 2/3

me ajudem ​

Answer 1

.

$\dfrac{3}{10} + \dfrac{2}{5}$

$\dfrac{3 + 4}{10}$

$\dfrac{7}{10}$

.

$2 + \dfrac{5}{12}$

$\dfrac{24 + 5}{12}$

$\dfrac{29}{12}$

.

$\dfrac{1}{3} + \dfrac{5}{12} + \dfrac{10}{15}$

$\dfrac{1}{3} + \dfrac{5}{12} + \dfrac{10 \div 5}{15 \div 5}$

$\dfrac{1}{3} + \dfrac{5}{12} + \dfrac{2}{3}$

$\dfrac{1 + 2}{3} + \dfrac{5}{12}$

$\dfrac{3}{3} + \dfrac{5}{12}$

$1 + \dfrac{5}{12}$

$\dfrac{12 + 5}{12}$

$\dfrac{17}{12}$

.

$2 - \dfrac{5}{12}$

$\dfrac{24 - 5}{12}$

$\dfrac{19}{12}$

.

$\dfrac{2}{3} + \dfrac{4}{10} + \dfrac{1}{15}$

$\dfrac{2}{3} + \dfrac{4 \div 2}{10 \div 2} + \dfrac{1}{5}$

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

$\dfrac{10 + 6 + 1}{15}$

$\dfrac{17}{15}$

.

$\dfrac{10}{12} - \dfrac{2}{3}$

$\dfrac{10 \div 2}{12 \div 2} - \dfrac{2}{3}$

$\dfrac{5}{6} - \dfrac{2}{3}$

$\dfrac{5 - 4}{6}$

$\dfrac{1}{6}$

Answer 2

Resposta:

A=7/10

B=29/12

C=85/60

D=19/12

E=34/30

F=2/12