zad.1 4/9 - 1/4 =1636 - 936=736 7/8 - 5/6 =21/24 - 2024=124 7 i 1/4 - 5 i 16/48 =7 1248 - 5 1648=1 4448=1 1112 zad.2 10/17 : 4 =10/17 * 14=1068=5/34 zad.3 3/8 liczby 40= 38 *40=1208=15 2 i 5/18 liczby 27= 41/18 *27=41/2 *3=123/2= 61 ½ zad.4 4 i 3/4 *8 + 2 i 1/7 : 20 =19/4 * 8 + 15/7 * 1/20=19*2 + 15140= 38+9 5/140= 47 128
4/9 - 1/4= 16/36 - 9/36= 7/36 7/8 - 5/6=42/48 - 30/48 = 12/48 = 1/4 7i1/4 - 5i16/48= 7 i 12/48 - 5 i 16/48 = 6 i 60/48 - 5 i 16/48 = 1 i 44/48 = 1 i 11/22 zad.2 10/17 : 4 = 10/17 *1/4 = 10/64 zad.3 3/8 * 40 = 15 2 i 5/18 * 27 = 41/18 * 27 = 61,5 zad.4 4 i 3/4 * 8/1 + 2 i 1/7 : 20 = 19/4 * 8/1 + 15/7 * 1/20 = 38/1 + 3/28 = 1064/28 + 3/28 = 1069/28
1. 4/9 - 1/4 = 16/36 - 9/36 = 7/36 7/8 - 5/6 = 42/48 - 40/48=2/48=1/24 7 i 1/4 - 5 i 16/48 =1/12 2. 10/17 : 4 =10/17 *1/4= 5/34 3. 3/8 liczby 40=15 2 i 5/18 liczby 27=61.5 4. 4 i 3/4 *8 + 2 i 1/7 : 20 = 1681/70=24 i 1/70
