Question

3 + 5/10 =
5 - ...... = 3/10
2,5 + .....= 2, 55

Answer 1

Solución:

1)

$3 + \frac{5}{10} = \frac{30 + 5}{10} = \frac{35}{10} = \frac{7}{2} = 3 \frac{1}{2}$

RPTA: 7/2

2)

$5 - x = \frac{3}{10} \\ 5 - \frac{3}{10} = x \\ \frac{50 - 3}{10} = x \\ \frac{53}{10} = x$

RPTA: 53/10

3)

$2.5 + x = 2.55 \\ x = 2.55 - 2.5 \\ x = 0.05$

RPTA: 0.05