Question

20/10+5/8_4/6_3/4=.
$\frac{2}{10} + \frac{5}{8} - \frac{4}{6} - \frac{3}{4} =$
​

Answer 1

Respuesta:

20/10 + 5/8 - 4/6 - 3/4

Hallamos el mcm de los denominadores.

10   8   6   4 | 2

5    4   3   2 | 2

5    2   3   1 | 2

5    1    3     | 3

5         1      | 5

1

2 * 2 * 2 * 3 * 5 = 120

20/10 = 20*12/10*12 = 240/120

5/8 = 5*15/8*15 = 75/120

4/6 = 4*20/6*20 = 80/120

3/4 = 3*30/4*30 = 90/120

Resolvemos:

240/120 + 75/120 - 80/120 - 90/120 = 240+75-80-90/120 = 145/120 = 29/24

ENTONCES:

20/10 + 5/8 - 4/6 - 3/4 = 29/24