Jawabanmu

2014-09-11T05:49:55+07:00
Titik2 tu umpama x
1/2 x -25 = 25 * 17
1/2 x = 25 * 17 + 25
1/2 x = 425 + 25
1/2 x = 450
x = 450 : 2
= 225