Ответы на вопрос:
№1. а) ( 11/12 - 0,75) + 1/16 = (11/12 - 3/4) + 1/16 = = (11/12 - 9/12) + 1/16 = 2/12 + 1/16 = = 1/6 + 1/16 = 8/48 + 3/48 = 11/48 б) 7 - 4 3/4 - 1 2/3 = 2 1/4 - 1 2/3= = 2 3/12 - 1 8/12= 7/12 №2. 6 1/6 - (х+0,375) = 3 7/24 х + 0,375 = 6 1/6 - 3 7/24 х + 0,375 = 6 4/24 - 3 7/24 х + 0,375 = 2 21/24 х + 0,375= 2,875 х=2,875 - 0,375 х= 2,5 проверим: 6 1/6 - ( 2,5 +0,375) = 3 7/24 6 1/6 - 2,875 = 3 7/24 6 1/6 - 2 7/8 = 3 7/24 6 8/48 - 2 42/48 = 3 7/24 3 14/48 = 3 7/24 3 7/24 = 3 7/24 б) 8 1/4 - (х - 3 5/9 ) = 2 7/12 8 1/4 - х + 3 5/9 = 2 7/12 8 9/36 - х + 3 20/36 = 2 7/12 11 29/36 - х= 2 7/12 х= 11 29/36 - 2 7/12 = 11 29/36 - 2 21/36= 9 8/36 х= 9 2/9 проверим: 8 1/4 - ( 9 2/9 - 3 5/9 ) = 2 7/12 8 1/4 - 5 6/9 = 2 7/12 8 1/4 - 5 2/3 = 2 7/12 8 3/12 - 5 8/12 = 2 7/12 2 7/12 = 2 7/12
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