Автор - Egorka3750451

Решите уравнение (580:b-25)*90+490=850

Ответ

Автор - 1r1na
(580:b-25)*90+490=850
580:b-25=(850 - 490) :90
580:b-25 = 4
 
580:b = 29
в= 580 : 29 = 20

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