na jutro potrzebuje !!!

Zad 7 a) 1 - 87/88 = 1/88 b) 1 - 3/100 = 97/100 c) 100 - 7/77 = 99 i 70/77Zad.8 b) 6 - 2 i 3/4 = 4 - 3/4 = 3 i 1/4 c) 8 - 3 i 4/5 = 5 - 4/5 = 4 i 1/5 d) 9 - 4 i 1/10 = 5 - 1/10 = 4 i 9/10 e) 11 - 8 i 3/8 = 3 - 3/8 = 2 i 5/8 f) 25 - 10 i 8/13 = 15 - 8/13 = 14 i 5/13Zad. 9 a) 3 i 1/3 = 2 i 4/3 3 i 1/3 - 2/3 = 2 i 4/3 - 2/3 = 2 i 2/3b) 2 i 5/8 = 1 i 13/8 2 i 5/8 - 7/8 = 1 i 13/8 - 7/8 = 1 i 6/8Zad. 10 a) 3 i 1/4 - 3/4 = 2 i 5/4 - 3/4 = 2 i 2/4 = 2 i 1/2 b) 5 i 1/3 - 2/3 = 4 i 4/3 - 2/3 = 4 i 2/3 c) 3 i 3/8 - 5/8 = 2 i 11/8 - 5/8 = 2 i 6/8 = 2 i 3/4 d) 5 i 3/17 - 6/17 =  4 i 20/17 - 6/17 = 4 i 14/17