A)
2 4\9 + 3 3\9 - 1 1\9 + 1 2\9
= (2 + 3 - 1 + 1) + (4\9 + 3\9 - 1\9 + 2\9)
= 5 + 8\9
= 5 8\9
B)
8 6\7 - 5 5\7 + 3 3\7 + 1 2\7
= (8 - 5 + 3 + 1) + (6\7 - 5\7 + 3\7 + 2\7)
= 7 + 6\7
= 7 6\7
A)
2 4\9 + 3 3\9 - 1 1\9 + 1 2\9
= (2 + 3 - 1 + 1) + (4\9 + 3\9 - 1\9 + 2\9)
= 5 + 8\9
= 5 8\9
B)
8 6\7 - 5 5\7 + 3 3\7 + 1 2\7
= (8 - 5 + 3 + 1) + (6\7 - 5\7 + 3\7 + 2\7)
= 7 + 6\7
= 7 6\7