Question

one rational no between 4/5 and -7/13​

Answer 1

Hey! mate, GOOD EVENING☺

4/5 × 13/13 = 52/65

-7/13 × 5/5 = -35/65

So, one rational number can be 50/65.

HOPE IT HELPS YOU❤❤❤

Answer 2

Step-by-step explanation:

$\textbf{}$1/2 × (a + b)

= 1/2 × ( 4/5 + (-7/13)

$\frac{1}{2} \times ( \frac{4}{5} + \frac{ - 7}{13} ) \\ \\ = \geqslant \frac{1}{2} \times \frac{52 -35}{65} \\ \\ = \geqslant \frac{1}{2} \times \frac{7}{65} \\ \\ = \geqslant \frac{7}{130}$