Автор - lavriknik

18a - 7b +1 при a = 5/27 b=-1/21​

Ответ

Автор - xxxeol

Объяснение:

18* 5/27 + 7*1/21 + 1 =

НОК(21/27) = 189,  189 = 21*9 и 27*7

(18*5*7  + 7*1*9)/189 + 1

(630+63)/189 +1 = 693/189 + 1 = 3 2/3 + 1 = 4 2/3 - ответ

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