Jawapan

2015-06-18T20:32:39+08:00
X+y=74 x-y=18 Hapuskan x Tolak Y-(-y)=74-18 2y=56 Y=56/2 Y=28 X+28=74 X=74-28 X=46 Check jawapan 28+46=74 46-28=28