Answers

2016-07-26T14:26:23+08:00
3x-2-(x+2)=7x-12-(3x-2)
3x-2-x-2=7x-12-3x+2
2x-4=4x-10
-4+10=4x-2x
(6=2x)รท2
3=x
0
substitute the value of x to get your arithmetic sequence