Ответ:
1. х = 2 7/18
2. х = 3 13/18
Пошаговое объяснение:
1. 1 1/3 - (8/9 - х) = 2 5/6
1 1/3 - 8/9 + х = 2 5/6
1 6/18 - 16/18 + х = 2 15/18
х = 2 15/18 + 16/18 - 1 6/18
х = 3 13/18 - 1 6/18 х = 2 7/18
2. 2 2/9 - (х - 1/6) = -1 1/3
2 4/18 - х + 3/18 = -1 6/18
-х = -1 6/18 - 2 7/18
-х = -3 13/18 х = 3 13/18
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Ответ:
1. х = 2 7/18
2. х = 3 13/18
Пошаговое объяснение:
1. 1 1/3 - (8/9 - х) = 2 5/6
1 1/3 - 8/9 + х = 2 5/6
1 6/18 - 16/18 + х = 2 15/18
х = 2 15/18 + 16/18 - 1 6/18
х = 3 13/18 - 1 6/18 х = 2 7/18
2. 2 2/9 - (х - 1/6) = -1 1/3
2 4/18 - х + 3/18 = -1 6/18
-х = -1 6/18 - 2 7/18
-х = -3 13/18 х = 3 13/18