Odpowiedzi

2010-03-23T14:53:29+01:00
2x+3/5= 2-x/3-x/*15
30x+15*3/5=30-15*x/3
30x+9=30-5x
30x+5x=30-9
35x=21/:35
x=0,6
6 1 6
2010-03-23T14:54:50+01:00
2x+3/5 = 2-x/3 - x /*5
10x+3=10-5x/3-5x /*3
30x+9=30-5x-15
50x=21/:50
x=21/50
3 2 3
2010-03-23T14:55:42+01:00
(2x +3) /5 = (2 -x) /3 - x /*15
3(2x+3)=5(2-x)-15x
6x+9=10-5x-15x
6x+5x+15x=10-9
26x=1 /:26
x=1/26
12 4 12