Verified answer

5 · (х - 1) = 3 · (х - 3)

5х - 5 = 3х - 9

5х - 3х = 5 - 9

2х = -4

х = -4 : 2

х = -2

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Проверка:

5 · (-2 - 1) = 3 · (-2 - 3)

5 · (-3) = 3 · (-5)

-15 = -15