Jawabanmu

2014-08-28T14:32:18+07:00
1. 5x-x+3-1=4x+2
2. 2y+4y+15z-8=6y+15z-8
2014-08-28T14:40:25+07:00
5x-x+3+1 =4x+4

-2y+4y +15z -8= 2y+15z-8