8 целых 4_15 - 6 целых 8_15 +7 целых 14_15
9 целых 1_24 + 8 целых 23_24 -7 целых 11_24
11 целых 4_29 -( 7 целых 7_29 + 3 целых 4_29 )
выполните действия 

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