Answer:
555
Step-by-step explanation:
4 + x = 12
x = 8
4 more than a number is 12
4,4
80×5,5%
80/1×5,5/100
4/1×5,5/5
22/5 = 4 2/5
4 2/5 = 4 4/10 = 44/10 = 4,4