Answer :
That was not worded very well but I get it...
If there are 3/8 of one pizza and 4/8 of another when you put them together you add
3 4 7
_ + _ = _
8 8 8
Because 3+4 = 7 and you place that over your denominator
If there are 3/8 of one pizza and 4/8 of another when you put them together you add
3 4 7
_ + _ = _
8 8 8
Because 3+4 = 7 and you place that over your denominator