Jawabanmu

2014-04-16T08:59:34+07:00
Diket: p=15 l: 3x-2 L= 105
ditanya: x
jwb : L= p x l

L= 15 x (3x-2)
105 = 15 x (3x-2)
105 = 45x-30
105 + 30 = 45x
135 = 45x
x >_ 135/45
x >_ 3