Предмет: Математика, автор: veronikaperesichan20

просьба срочно!!!! дам 10б

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Автор ответа: iamsergeevichh

0

Ответ:

(9-2,3х) × 5 = 15 × (1,4х - 3,5)

45 - 11,5х = 21х - 52,5

-11,5х - 21х = -52,5 - 45

-32,5х = -97,5

х = 3

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