Предмет: Математика, автор: dauletkeldinurali

= 4) 9x - 10y + 16x + 9у, при х = -0,8, у = 2,5; 5) -1,4a + 31b - 2,6a + 4b, при а = 1,4, b = -0,2.
Даю баллы 60​

Ответы

Автор ответа: petrushka27
0

Решение на фотографии

Приложения:
Автор ответа: anzur30go
0

Ответ:

9*-0,8 - 10*2,5 + 16*-0,8 + 9*2,5=-7,2 - 25 + 12 + 22,5

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