Question

arrange the following rational numbers in descending order -7/10, 8/-15, 19/30, -2/-5​

Answer 1

Answer:

$\frac{19}{30} > \frac{12}{30} > \frac{ - 16}{30} > \frac{ - 21}{30}$

Step-by-step explanation:

L.C.M. of 10, 15, 30 and 5 would be 30.

$\frac{ - 7}{10} \times \frac{3}{3} = \frac{ - 21}{30}$

$\frac{8}{ - 15} \times \frac{ - 2}{ - 2} = \frac{ - 16}{30}$

$\frac{19}{30} \times \frac{1}{1} = \frac{19}{30}$

$\frac{ - 2}{ - 5} \times \frac{6}{6} = \frac{ - 12}{ - 30} = \frac{12}{30}$

Comparing the fractions,

$\frac{19}{30} > \frac{12}{30} > \frac{ - 16}{30} > \frac{ - 21}{30}$