Răspunsuri

2014-05-10T18:08:07+03:00
4x -16 ?<0
4x< 0 + 16
4x<16
x< 16:4
x<4. S= (0,1,2,3)
3x -12≤ 0
3x ≤12
x≤4
S= (0,1,2,3,4)
-7x + 21 ≥0
-7x ≥ -21
x≤ 3 (semnele se schimba)
s= (0,1,2,3)
1 5 1
2014-05-10T18:09:59+03:00


a) 4x<16

⇒x<4

x=0,1,2,3

b)3x≤12

x≤4

x=0,1,2,3

c)7x≤21

x≤3

x=0,1,2,3