1.
Equation: (3×n)-7=2 (n is just the missing number)
Solution: n is 3 or just 3
2.
You bought 5 pairs of socks
Step-by-step explanation:
96-76=20
20÷4=5 pairs of socks (Before tax)
3.
The number is 2
Step-by-step explanation:
5×n=2(n+3)
5×2=2(2+3)
10=2(5)
10=10
Hope this helps!