Пошаговое объяснение:
№1
х - 3/20 = 5/12 + 4/9
х - 3/20 = 15/36 + 16/36
х - 3/20 = 31/36
х = 31/36 + 3/20
х = 155/180 + 27/180
х = 182/180
х = 1. 2/180
х = 1. 1/90
№2
у - 15/32 = 1/4 + 1/64 + 7/16
у - 30/64 = 16/64 + 1/64 + 28/64
у - 30/64 = 45/64
у = 45/64 + 30/64
х = 75/64
х = 1. 11/64
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Пошаговое объяснение:
№1
х - 3/20 = 5/12 + 4/9
х - 3/20 = 15/36 + 16/36
х - 3/20 = 31/36
х = 31/36 + 3/20
х = 155/180 + 27/180
х = 182/180
х = 1. 2/180
х = 1. 1/90
№2
у - 15/32 = 1/4 + 1/64 + 7/16
у - 30/64 = 16/64 + 1/64 + 28/64
у - 30/64 = 45/64
у = 45/64 + 30/64
х = 75/64
х = 1. 11/64