Question

1/6 + 3/5 - 4/8 como eu resolvo isso?

Answer 1

Mmc:

6,5/2
3,5/3
1,5/5
1,1/ > 30

30,8/2
15,4/2
15,2/2
15,1/3
5,1/5
1,1/ > 120



(5+18/30) - 4/8 =
23/30 - 4/8 =
92-60/120 =
32/120 ÷ 2 =
16/60 ÷ 4 =
→ 4/15

Answer 2

$\frac{1}{6} + \frac{3}{5} - \frac{4}{8}$
Faremos o M.M.C das 2 primeiras frações:
$\frac{5 \times 1}{6} + \frac{6 \times 3}{5}$
$\frac{5 + (6 \times 3)}{6 \times 5}$
$\frac{5 + 18}{30} = \frac{23}{30}$
$\frac{23}{30} - \frac{4}{8}$
Novamente faremos o M.M.C
$\frac{23 \times 8}{30} + \frac{30 \times 4}{8}$
$\frac{(23 \times 8) + (30 \times 4)}{30 \times 8}$
$\frac{184 +120 }{240} = \frac{284}{240} = \frac{71}{40}$