Ответы на вопрос:
=(3/4 + 3/8) : 3/4 - 1/2 = (6/8 + 3/8) : 3/4 - 1/2 = 9/8 * 4/3 - 1/2 = 3/2 - 1/2 = 2/2 = 1
3) 13 - х = 17
х = 17 - 13 = 4
х = 4
х + 38 = 52
х = 52 - 38 = 14
х = 14
53 - х = 29
х = 53 - 29 = 24
х = 24
х + 79 = 93
х = 93 - 79 = 14
х = 14
х - 25 = 39
х = 39 - 25 = 14
х = 14
77 + х = 81
х = 81 - 77 = 4
х = 4
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