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2x - 0,3 = 7/10 (cum se calculeaza)

Răspuns :

[tex]2x - 0.3 = \frac{7}{10} \\ 2x = \frac{7}{10} + 0.3 \\ 2x = \frac{7}{10} + \frac{3}{10} \\ 2x = \frac{10}{10} \\ 2x = 1 \\ x = 1 \div 2 \\ x = 0.5[/tex]