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4x ≤ 13+3 = 16
x=16/4= 4
b. 3x<2(x+3)
3x-x < 3-2
2x < 1
4x - 3 + 3 ≤ 13 + 3
4x ≤ 16
4x : 4 ≤ 16 : 4
x ≤ 4
Jadi x = { 0,1,2,3,4}
b. 3x < 2(x+3)
Jabarkan dulu yang 2(x+3)
3x < 2x + 6
3x - 2x < 2x - 2x + 6
x < 6
Jadi x = { 0,1,2,3,4,5}