Автор - mariasovolocsk

(18x-19)-(4-7x)=-73 помогите

Ответ

Автор - 1401Tamara
(18х - 19) - (4 - 7х) = -73

18х - 19 - 4 + 7х = -73

25х = -73 + 19 + 4
25х = -50
х = -2

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