Jawapan

2015-09-29T08:18:42+08:00
169 + 61 + X + X = 360
230 + 2X = 360
2X = 360 - 230
2X = 130
X = 130 /2
X = 65
2015-10-01T13:28:55+08:00
This is simple form...
360-169-61=
x=130/2
x=65