Jawabanmu

2014-05-15T23:25:35+07:00
2014-05-15T23:47:40+07:00
X/(x+18) = 4/7
7x = 4(x+18)
7x = 4x + 72
7x - 4x = 72
3x = 72
x = 24.
masukkan ke atas
x/(x+18) = 24/(24+18) = 24/42
2 3 2