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2x - 7 > -1
2x> - 1 + 7
2x > 6 /:2
x>3
b)
-3x + 7 < -2
-3x < - 2 - 7
-3x< - 9 / :( - 3)
x>3
c)
x - 9 ≥ 3x
x - 3x ≥ 9
- 2x ≥ 9 /:(-2)
x≤ - 4,5
d)
2 (x-1) -3 (x-2) < 6
2x-2 -3x+6 < 6
2x -3x < 6 + 2 - 6
-x < 2 /:(-1)
x> - 2