Question

resolva as adiçoes e subtraçoes em fração
a) 1\2 + 3\2 =
b) 4\3 + 5\3 =
c) 5\6 + 2\6 =
d) 1\2 + 1\3 =
e) 1\2 + 1\4 =
f ) 1\3 + 1\4 =
g) 3\4 - 2\3 =
h) 2\5 - 1\3 =
​​

Answer 1

Resposta:

a) 2/1 ou 2

b) 3/1 ou 3

c) 7/6

d)5/6

e)3/4

f)7/12

g)1/12

h)1/15

Explicação passo-a-passo:

$\frac{1}{2} + \frac{3}{2} = \frac{4}{2 } = 2 \\ \frac{4}{3} + \frac{5}{3} = \frac{9}{3} = 3 \\ \frac{5}{6} + \frac{2}{6} = \frac{7}{6 } \\ \frac{1}{2} + \frac{1}{3} = \frac{3}{6} + \frac{2}{6} = \frac{5}{6} \\ \frac{1}{2} + \frac{1}{4} = \frac{2}{4} + \frac{1}{4} = \frac{3}{4}$

$\frac{1}{3} + \frac{1}{4} = \frac{4}{12} + \frac{3}{12} = \frac{7}{12} \\ \frac{3}{4} - \frac{2}{3} = \frac{9}{12} - \frac{8}{12} = \frac{1}{12} \\ \frac{2}{5} - \frac{1}{3} = \frac{6}{15} - \frac{5}{15} = \frac{1}{15}$