а) 26 + x + 67 = 26 + 67 + x = 93 + x
б) a - 55 - 28 = a - 27
в) 79 - 21 - p = 58 - p
г) 64 - z - 23 = 64 - 23 - z = 41 - z
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а) 26 + x + 67 = 26 + 67 + x = 93 + x
б) a - 55 - 28 = a - 27
в) 79 - 21 - p = 58 - p
г) 64 - z - 23 = 64 - 23 - z = 41 - z