Answer:
Approximately 78%
The LCM of 5, 6, and 9 is the product of all prime numbers on the left, i.e. LCM(5, 6, 9) by division method = 2 × 3 × 3 × 5 = 90.
X = -13/10
Step-by-step explanation:
(_1,_7),(_2,_6),(_3,_5),(_4,_4)(_5,_3)