Odpowiedzi

2009-09-30T15:26:05+02:00
¼ - 3×-7/3 = 0,8 - 2x+5x/3 | *3
3/4 - 3x + 7 = 12/5 - 2x - 5x
3/4 - 3x + 28/4 = 12/5 - 7x
31/4 - 3x = 12/5 - 7x
- 3x + 7x = 12/5 - 31/4
4x = 48/20 - 155/20
4x = - 107/20
x = -107/20 * 1/4 ≈ - 1,34