Пошаговое объяснение:
[tex]2.5x - 1.3 = 7.2 \\ 2.5x = 7.2 + 1.3 \\ 2.5x = 8.5 \\ x = \frac{8.5}{2.5} \\ x = 3.4[/tex]
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Пошаговое объяснение:
[tex]2.5x - 1.3 = 7.2 \\ 2.5x = 7.2 + 1.3 \\ 2.5x = 8.5 \\ x = \frac{8.5}{2.5} \\ x = 3.4[/tex]