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d) 0,7x-2≤0,9x-0,1 /*10
7x - 20 ≤ 9x - 1
7x - 9x ≤ 20 - 1
-2x ≤ 19 /: (-2)
x ≥ - 9,5
e) -x + 3 ≥ -(3x - 2)
-x + 3 ≥ -3x + 2
-x + 3x ≥ -3 + 2
2x ≥ -1 / :2
x ≥ - 0,5
f) 0,1(2x - 3) < -0,6x + 1
0,2x - 0,3 < -0,6x + 1 /*10
2x - 3 < -6x + 10
2x + 6x < 10 + 3
8x < 13 / :8
x < 13/8
x < 1 i pięć ósmych