a) 3-x<4
- x < 4 - 3
-x < 1 /*(-1)
x > - 1
b) 6x ≥ 1+8x
6x - 8x ≥ 1
- 2x ≥ 1 /:(-2)
x ≤ - 1/2
c)3+1/2x >3/2x-1 /*2x
3* 2x + 1 > 3 - 2x
6x + 1 > 3 - 2x
6x + 2x > 3 - 1
8x > 2 /:8
x > 2:8
x > 2/8
x > 1/4
d) 1-2/3x ≥ 8 + 5/3x /*3x
3x - 2 ≥ 8 + 5
3x ≥ 13 + 2
3x ≥ 15
'
x≥ 15 : 3
x ≥ 5
2 i 5/10 x-1/4<3/4x+1
2 i 5/10x - 3/4 x < 1 + 1/4
2 i 1/2x - 3/4x < 1 i 1/4
2 i 2/4x - 3/4x < 1 i 1/4
1 i 3/4x < 5/4
x < 5/4 : 1 i 3/4
x < 5/4 : 7/4
x < 5/4 * 4/7
x < 5/1 * 1/7
x < 5/7
E i F Nie wiem
