498 is approximately 500
12 is approximately 10
500/10 = 50
So, 498/12 is approximately 50.
The second box to the left side
The answer is the last one 5x-12/(x+3)(x-3)
Answer:
the answer for this problem should be half of 3.1 sense 2.5 is half of 5 so split 3.1 in have to get 1.55. hope this helps.
The rule to convert a mixed fraction to an improper fraction is

Here in 
Here a = 422, b = 8 and c = 100
Now a × c = 422 × 100 = 42200
And 42200 + 8 = 42208
So we have

This fraction can also be reduced as

Hence
