Odpowiedzi

2010-03-21T18:55:20+01:00
A)
2x-5+2x+7-3x=8
x+2=8

x=6


b)
2y-2+3y-5y+2-y=4
-y=4

y=-4
2010-03-21T18:57:22+01:00
A)2x-5+2x+7-3x=8
2=8
x=6
b)2y-2+3y-5y+2-y=4
-y=4
y=-4
2010-03-21T18:58:16+01:00
2x-5+2x+7-3x=8
1x=8+5-7
x=6
spr:12-5+12+7-18=8
8=8
2y-2+3y-5y+2-y=4
2y+3y-5y-y=4+2-2
-y=4
y=-4
spr: -8-2-12+20+2+4=4
-22+26=4
4=4