Question

find the sum of a suitable rearrangement, find the sum of
a). 13/5+21/8+(-6/5)+(-1/8)​

Answer 1

Step-by-step explanation:

Solution:-

$\frac{13}{5} + \frac{21}{8} - \frac{6}{5} - \frac{1}{8} \\ = ( \frac{13}{5} - \frac{6}{5} ) + ( \frac{21}{8} - \frac{1}{8} ) \\ = \frac{ 7}{5} + \frac{20}{8} \\ = \frac{7}{5} + \frac{5}{2} \\ = \frac{14 + 25}{10} \\ = \frac{39}{10 \: } \: or \: 3.9$