10 4/19 - (х + 2 5/19) = 3 12/19
х + 2 5/19 = 10 4/19 - 3 12/19
х + 2 5/19 = 9 23/19 - 3 12/19
х + 2 5/19 = 6 11/19
х = 6 11/19 - 2 5/19
х = 4 целых 6/19
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Раскроем скобки:
10 4/19 - х - 2 5/19 = 3 12/19
9 23/19 - 2 5/19 - х = 3 12/19
7 18/19 - х = 3 12/19
х = 7 18/19 - 3 12/19
10 4/19 - (х + 2 5/19) = 3 12/19
х + 2 5/19 = 10 4/19 - 3 12/19
х + 2 5/19 = 9 23/19 - 3 12/19
х + 2 5/19 = 6 11/19
х = 6 11/19 - 2 5/19
х = 4 целых 6/19
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Раскроем скобки:
10 4/19 - х - 2 5/19 = 3 12/19
9 23/19 - 2 5/19 - х = 3 12/19
7 18/19 - х = 3 12/19
х = 7 18/19 - 3 12/19
х = 4 целых 6/19