Question

Me ajude
1)calcule as frações abaixo:
A) 1/2-3/4-4/3=

B)1/4-2/3=

Answer 1

a)

$\frac{1}{2} - \frac{3}{4} - \frac{4}{3} = \frac{1 \times 6}{2 \times 6} - \frac{3 \times 3}{4 \times 3} - \frac{4 \times 4}{3 \times 4} \\ \\ \frac{6}{12} - \frac{9}{12} - \frac{16}{12} = \frac{6 - 9 - 16}{12} = - \frac{19}{12}$

b)

$\frac{1}{4} - \frac{2}{3} = \frac{1 \times 3}{ 4 \times 3} - \frac{2 \times 4}{3 \times 4} \\ \\ \frac{3}{12} - \frac{8}{12} = \frac{3 - 8}{12} = - \frac{5}{12}$

Answer 2

Resposta:

A)1/2-3/4-4/3=

MMC= 12

6/12-9/12-16/12=

-19/12

Explicação passo-a-passo:

B) 1/4-2/3

MMC=12

3/12 - 8/12=

-5/12