To find out what's the weight missing we must subtract the expected weight from the actual weight.
The expected weight is 140kg, the actual weight is 132kg and 9 hectograms, remember that 1 hectogram 0.1kg, then 9 hectogram is 0.9. Then the actual weight is 132.9kg.
The weight of the missing equipment will be
The weight of the missing equipment is 7.1 kg