Jawabanmu

2014-03-20T19:37:15+07:00
3x + 2x +5x = 10x
10x + 4 - 6 = 48
10x = 48 - 4 + 6
10x = 44 + 6
10x = 50
x = 5

sisi terpanjang adalah 5x - 6
2014-03-20T22:14:47+07:00
3x + (2x + 4) + (5x - 6) = ( 3x + 2x + 5x ) + 4 - 6 = 10x = 48 - 4 + 6 10x = 50 jadi, x = 50 : 10 = 5 jadi, sisi a = 15 cm, sisi b = 14 cm, sisi c = 19, dan kelilingnya 48 cm