囧
1:2X+16=3X-3
2X+16-3X+3=0
19-X=O
X=19
2:8Y-9Y-6=6
-Y-12=0
Y=-12
3:2X-2/3X-2+X-3=0
2X+1/3X-5=O
X=15/7
好猥琐的补充:20-Y+1.5Y+2=0
20+0.5Y+2=0
Y=-44
不知对不对.
囧
1:2X+16=3X-3
2X+16-3X+3=0
19-X=O
X=19
2:8Y-9Y-6=6
-Y-12=0
Y=-12
3:2X-2/3X-2+X-3=0
2X+1/3X-5=O
X=15/7
好猥琐的补充:20-Y+1.5Y+2=0
20+0.5Y+2=0
Y=-44
不知对不对.