Пошаговое объяснение:
х - 6 : 22,5 = 4/9
х - 6 : 22 5/10 = 4/9
х - 6 : 225/10 = 4/9
х - 6 * 10/225 = 4/9
х - 2 * 10/75 = 4/9
х - 20/75 = 4/9
х - 4/15 = 4/9
х = 4/9 + 4/15
х = 20/45 + 12/45
х = 32/45
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Пошаговое объяснение:
х - 6 : 22,5 = 4/9
х - 6 : 22 5/10 = 4/9
х - 6 : 225/10 = 4/9
х - 6 * 10/225 = 4/9
х - 2 * 10/75 = 4/9
х - 20/75 = 4/9
х - 4/15 = 4/9
х = 4/9 + 4/15
х = 20/45 + 12/45
х = 32/45