Автор - Ahmad003

19x+457+39x-278, если
x=23

Ответ

Автор - Yasia2905
19х+457+39х-278
при х=23
19х+39х+457-278
58х+179
58×23+179
1)58×23=1,334
2)1,334+179=1,513
1,513
Ответ:1,513.

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