Answer:
1: $16
2: 1.7 pounds
3: 12
Step-by-step explanation:
1:
(I'm assuming it's 4 used video games)
82 - 18 = 64
He spent $64
64 / 4 = 16
2:
10.9 - 2.4 = 8.5
8.5 / 5 = 1.7
3:
We do it backwards, so the subtract becomes an add, and the multiply a divide
101 + 7 = 108
108 / 9 = 12