2 + 3x = -2x - 13
3х + 2х = -13 - 2
5х = -15
х = -15 / 5
х = -3
-------------------
2 + 3 · (-3) = -2 · (-3) - 13
2 + (-9) = 6 - 13
-7 = -7
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2 + 3x = -2x - 13
3х + 2х = -13 - 2
5х = -15
х = -15 / 5
х = -3
-------------------
2 + 3 · (-3) = -2 · (-3) - 13
2 + (-9) = 6 - 13
-7 = -7