Решение:
3х - 1 = 2(х - 2)
3х - 1 = 2х - 4
3х - 2х = -4 + 1
х = -3
-----------------
3 · (-3) - 1 = 2((-3) - 2)
-9 - 1 = -6 - 4
-10 = -10
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Решение:
3х - 1 = 2(х - 2)
3х - 1 = 2х - 4
3х - 2х = -4 + 1
х = -3
-----------------
3 · (-3) - 1 = 2((-3) - 2)
-9 - 1 = -6 - 4
-10 = -10