It’s just a little confusing to me could someone help me?

Question

On Monday there were 92 fish in the fish tank. On Tuesday 4 fish were sold, on Wednesday 1 fish was sold, on Thursday 4 fish were added to the tank, and on Friday 3 fish were sold. How many fish were in the fish tank at the end of the week?

Answer 1

We start with 92

Monday 92

Tuesday 4 sold so 92-4 = 88

Wednesday 1 sold so 88 - 1 = 87

Thursday 4 added so 87 + 4 = 91

Friday 3 sold so 91 - 3 = 88

So 88 in tank at end of week