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3(2t-1) ≤ 2t + 9
6t - 3 ≤ 2t + 9
6t-2t ≤ 9 + 3
4t ≤ 12
t ≤ 12/4
t ≤ 3
Hp {3,4,5..}
nomor 2
2(x - 30) < 4(x - 2)
2x - 60 < 4x - 8
2x - 4x < -8 + 60
-2x < 52
x > 52/-2
x > -26
Hp {-25,-24,-23,...}
nomor 3
6 - 2(y - 3) ≤ 3( 2y - 4)
6 - 2y + 6 ≤ 6y - 12
-2y - 6y ≤ -12 - 6 - 6
-8y ≤ -24
y ≤ -24/-8
y ≤ 3
Hp {3,2,1...}
6t -3 ≤ 2t +9
6t -2t ≤ 9 +3
4t ≤ 12
t ≤ 3
HP = {3, 2, 1, 0,......}
2. 2(x -30) < 4(x -2)
2x -60 < 4x -8
2x -4x < -8 +60
-2x < 52
x > -26
3. 6 -2(y -3) ≤ 3(2y -4)
6 -2y +6 ≤ 6y -12
-2y +12 ≤ 6y -12
-2y -6y ≤ -12 -12
-8y ≤ -24
y ≤ 3