Odpowiedź :
x/2 + x/4 + x/5 = x - 1 / *20
10x + 5x + 4x= 20x - 20
10x + 5x + 4x = 20x - 20
19x - 20x = - 20
- x = - 20
X = 20
Odpowiedź:
[tex] \frac{x}{2} + \frac{x}{4} \times \frac{x}{5} = x - 1 \\ 10x + 5x + 4x = 20x = - 20 \\ 19x = 20x - 20 \\ 19x - 20x = - 20 \\ - x = - 20 \\ x = 20[/tex]