Question

Imi puteti arata rezolvarea completa a urmatorului exercitiu? Dau coroana!

Answer 1

$\frac{2}{5} - \frac{4 \times + 4}{3} + \frac{7x + 4}{5} = \frac{2x + 6}{5} - \frac{2x + 5}{3} \\ 6 - 5(4x + 4) + 3(7x + 4) = \\ = 3(2x + 6) - 5(2x + 5) = \\ = 6 - 20x - 20 + 21x + 12 = 6x + 18 - 10x - 25 \\ = - 2 + x = - 4x - 7 = x + 4x = \\ = - 7 + 2 = 5x = - 5 = x = - 1$
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