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pnjang = x+3
lebr = 6
L < 48 cm²
mk :
L > p x l
48 > (x+3) x 6
48 > 6x + 18
48-18 > 6x
30/6 > x
5 > x
Luas = kurang dari 48 cm^2
Luas < 48
pl < 48
6(x+3) < 48
6x + 18 < 48
6x < 48-18
6x < 30
x < 5
Nilai yang mungkin = 1,2,3,4