Jawabanmu

2014-09-10T20:01:47+07:00
X-1+2x+3x+1=6
6x=6
x=6/6
x=1
2014-09-10T20:03:24+07:00
X+2x+3x-1+1=6
6x=6 
x= 6/6 
x=1