To transform a mixed number to an improper fraction, we must multiply the denominator by the large number, and add the numerator.

So for :

But we also put this over the denominator in the mixed number, so we get: .

Then we do the same for :

Then we must find a common denominator. Let's use 21 (multiply 3 and 7):

Now that we have a common denominator, we can subtract across:

Since cannot be reduced any further, we are going to leave this as our answer.

So the answer is .

i need the options

step-by-step explanation: