Jawabanmu

2014-01-09T19:53:55+07:00
Kayak gini bukan?

<P = (3x+2) <S = (x+30)
<P+<S = 180·
(3x+2) + (x+30) = 180
(3x+32) =180
3x = 180-32
x = 148/3
x = 49.33 = 50 -> dibulatkan

<P = (3.50+2) = 152
<S = (50+30) = 80


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