Пошаговое объяснение:
(х + 9 7/8) - 4 1/2 = 3 7/4
х + 9 7/8 = 3 7/4 + 4 1/2
х + 9 7/8 = 3 14/8 + 4 4/8
х + 9 7/8 = 7 18/8
х = 7 18/8 - 9 7/8
х = 9 2/8 - 9 7/8
х = -5/8
5 8/25 + (9 7/10 - х) = 7 7/20
9 7/10 - х = 7 7/20 - 5 8/25
9 70/100 - х = 7 35/100 - 5 32/100
9 70/100 - х = 2 3/100
х = 9 70/100 - 2 3/100
х = 7 67/100
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Пошаговое объяснение:
(х + 9 7/8) - 4 1/2 = 3 7/4
х + 9 7/8 = 3 7/4 + 4 1/2
х + 9 7/8 = 3 14/8 + 4 4/8
х + 9 7/8 = 7 18/8
х = 7 18/8 - 9 7/8
х = 9 2/8 - 9 7/8
х = -5/8
5 8/25 + (9 7/10 - х) = 7 7/20
9 7/10 - х = 7 7/20 - 5 8/25
9 70/100 - х = 7 35/100 - 5 32/100
9 70/100 - х = 2 3/100
х = 9 70/100 - 2 3/100
х = 7 67/100