Question

-2x-20=3x-21
va rog ajutati ma la acest calcul​

Answer 1

Răspuns:

$- 2x - 20 = 3x - 21 \\ - 2x - 3x = - 21 + 20 \\ - 5x = - 1 | \times ( - 1) \\ 5x = 1 \\ \\ x = \frac{1}{5}$

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