Odpowiedzi

2009-10-29T13:46:22+01:00
A) x+2=3
x=3-2
x=1

b)3-2x<9
-2x<9-3
-2x<6/:(-2)
x>-3
2009-10-29T15:05:54+01:00
A] x+2=3
x=3-2
x=1
b] 3-2x<8
-2x=<8-3
-2x<5 /:[-2]
x=-2.5