Odpowiedź:
23,5 + 45,67 = 69,17
127,8 - 58,3 = 69,5
312,78 + 567,39 = 880,17
791,8 - 673,3 = 118,5
139,57 - 121,481 = 18,089
zad2
2 i 1/3 + 7 i 3/4 = 2 i 4/12 + 7 i 9/12 = 9 i 13/12 = 10 i 1/12
9 i 5/7 - 6 i 1/2 = 9 i 10/14 - 6 i 7/14 = 3 i 3/14
5/8 * 4/25 = 1/10
1 i 2/5 : 7/40 = 7/5 * 40/7 = 8
5/6 * 3/10 * 2/7 = 1/4 * 2/7 = 1/14
