arrange the following rational numbers in descending order (-4)/7,(-9)/14,13/(-28),(-23)/42
Answers
Answered by
6
first we will take lcm of all the denominator
7l_7,14,-28,42__
2l_1,2,-4,6______
- 2l_1,1,-2,3______
3 l_1,1,1,3_______
l_1,1,1,1______
so the lcm is7×2×-2×3=14×-6= 84
12×-4,-9×6,13×-3,-23×2/84
-48,-54,-39,-46/84
-39/84 > -46/84 >-48/84>-54/84
=13/-28 > -23/42> -4/7 > -9/14
Similar questions