Odpowiedzi

2010-02-25T15:30:24+01:00
3a+4 = 6/5a - 2
3a - 6/5a = -4 -2
1⅘a = -6
9/5a = -6 | * 5/9
a = -30/9
a = -10/3
a = -3 i 1/3

Odp. a = -3 i jedna trzecia
2010-02-25T15:30:50+01:00
3a=4=6/5a-2
3a-6/5a=-2-4
1 i 4/5a=-6 / 1 i4/5
a=-3i 1/3