Odpowiedzi

2010-01-03T14:16:36+01:00
8x+6>22 |-6
8x>16 |:8
x>2

2(x-9)>5x
2x-18>5x |-2x
-18>3x |:3
-6>x

7-2(x-5)<6
7-2x+10<6
17-2x<6 |-17
-2x< -11 |:(-2)
x> 11/2
2010-01-03T14:18:59+01:00
A) 8x+6>22
8x>16 I:8
x>2

b) 2(x-9)>5x
2x-18>5x
-18>3x I:3
-6>x
x<-6

c) 7-2(x-5)<6
7-(2x-10)<6
7-2x+10<6
17-2x<6
-2x<-11 I:(-2)
x>5,5
2010-01-03T14:29:06+01:00
8x+6>22 |-6
8x>16 |:8
x>2

2(x-9)>5x
2x-18>5x |-2x
-18>3x |:3
-6>x

7-2(x-5)<6
7-2x+10<6
17-2x<6 |-17
-2x< -11 |:(-2)
x > 5,5

^^