Odpowiedzi

2010-02-10T19:58:55+01:00
1/2y=7-3
1/2y=4| 1/2
y=8
3 2 3
2010-02-10T20:01:34+01:00
1/2y+3=7
1/2y=7-3
1/2y=4|:2
y=2

3/5y+2/5=4I*20
4*3+4*2=5
12+8=5
20=5I:20
-4

3(y+2)=5
3y+6=5
3y=5-6
3y=-1I*3
y=-3

7(y+3)=5y+2+2y
7y+21=5y+2+2y
7y-5y-2y=21-2
2y-2y=21-2
y=19

y/2+1/3=7/6 I*6
3*y+2*1=7
3y+2=7
3y=7-2
3y=5I:3
y=5/3
4 2 4