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bilangan cacah adalah....
2x-3<7
2x<7+3
2x<10
x<10/2
x<5
2.Penyelesaian dari 3(x - 2) + 7 ≥ x + 19 adalah....
3(x - 2) + 7 ≥ x + 19
3x-6+7 ≥ x+19
3x-x ≥ 19+6-7
2x ≥ 18
x ≥ 18/2
x ≥ 9
3.Himpunan penyelesaian dari 3(x + 5) - 28 > 2(1 - x) adalah...
3(x + 5) - 28 > 2(1 - x)
3x+15-28>2-2x
3x+2x>2-15+28
5x>15
x>15/5
x>3
4.Himpunan penyelesaian dari 14 - 3(1 - x) ≤ x - 5 adalah....
14 - 3(1 - x) ≤ x - 5
14-3+3x ≤ x-5
3x-x ≤ -5-14+3
2x ≤ -16
x ≤ -16/2
x ≤ -8
2x < 7 + 3
2x < 10
x < 10/2
x < 5
2. 3(x - 2) + 7 ≥ x + 19
3x - 6 + 7 ≥ x + 19
3x - x ≥ 19 + 6 - 7
2x ≥ 18
x ≥ 18/2
x ≥ 9
3. 3(x + 5) - 28 > 2(1 - x)
3x + 15 - 28 > 2 - 2x
3x + 2x > 2 - 15 + 28
5x > 15
x > 15/5
x > 3
4. 14 - 3(1 - x) ≤ x - 5
14 - 3 + 3x ≤ x - 5
3x - x ≤ -5 + 3 - 14
2x ≤ -16
x ≤ -16/2
x ≤ -8