You have 12 balloons to blow up for a party. you blow up 1313 of them, and your friend blows up 5 of them. what fraction of the balloons still need blowing up?

12 balloons total
u blow up 1/31/3(12) = 12/3 = 4so u blow up 4 out of 12...thats 4/12
ur friend blows up 5...he blows up 5 out of 12thats 5/12

so 4/12 + 5/12 = 9/129/12 are blown upthat leaves 3/12 or 1/4 left to blow up

For range i think it’s area