Ответ:
[tex]0.13x + x - 2x = 10 - 12 \\ 0.87x = - 2 \\ x = - 2.29 \\ [/tex]
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Ответ:
[tex]0.13x + x - 2x = 10 - 12 \\ 0.87x = - 2 \\ x = - 2.29 \\ [/tex]