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5t -1 < 6 -3t +3
5t -1 < 9 -3t
5t +3t < 9 +1
8t < 10
t < 10/8
t < 1 2/8
t < 1 1/4
-------------------------------------------
4(2b -1) > 5 -2(b -8)
8b -4 > 5 -2b +16
8b -4 > 21 -2b
8b +2b > 21 +4
10b > 25
b > 25/10
b > 2 5/10
b > 2 1/2
------------------------------------------
3x -(5x +15) ≤ x
3x -5x -15 ≤ x
-2x -15 ≤ x
-2x -x ≤ 15
-3x ≤ 15
x ≤ 15/-3
x ≤ -5
-------------------------------------------
3(2x -3) > 9 -2(x -1)
6x -9 > 9 -2x +2
6x -9 > 11 -2x
6x +2x > 11 +9
8x > 20
x > 20/8
x > 2 4/8
x > 2 1/2
Itu jawabannya.