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a) 2(x-1)-3 > 1
2x-2-3 > 1
2x > 2 +3 + 1
2x > 6 / :2
x> 3
b) 3x-1 ≥ 2x-2,67
3x-2x ≥ 1- 2,67
x ≥ 1,67
zad.2
a) 2x-3 > 7
2x> 7+3
2x>10 /:2
x> 5
b) 0,1-0,5x < 0,2+0,3x
-0,5x-0,3x < -0,1 + 0,2
-0,8x < 0,1 /: -0,8
x> - 0, 125
x> - 1/8
c) 3(x+4)-1 ≤ x
3x + 12 - 1 ≤ x
3x -x ≤ 1- 12
2x ≤ -11 /:2
x ≤ - 5,5