= (15,65х - 9,9х - х) + 27,7 = 4,75х + 27,7.
Ответ: 4,75х + 27,7.
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= (15,65х - 9,9х - х) + 27,7 = 4,75х + 27,7.
Ответ: 4,75х + 27,7.