Пошаговое объяснение:
276m - (172m + 14m) = 276m - 186m = 90m
26z + (13z - 5z) = 26z + 8z = 34z
42x + 45 + 8x + 45 = 50x + 90
204b + 30b + 6b + 56 = 240b + 56
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Пошаговое объяснение:
276m - (172m + 14m) = 276m - 186m = 90m
26z + (13z - 5z) = 26z + 8z = 34z
42x + 45 + 8x + 45 = 50x + 90
204b + 30b + 6b + 56 = 240b + 56