Question

6 4/9+3 5/9 вычесть.

Answer 1

6 4/9 + 3 5/9 = 9 9/9 = 10
6 4/9 - 3 5/9 = 2 8/9

Answer 2

6 4/9-3 5/9=5 13/9-3 5/9=2 8/9
6 4/9+3 5/9=9 9/9=10
2 способ
6 4/9-3 5/9=58/9-32/9=26/9=2 8/9
58/9+32/9=90/9=10