解方程x+33-x−16=5−x2,去分母所得结论正确的是(  ) A.x+3-x+1=15-x B.2x+6-x+1=15-3x C.x+6-x-1=15-x D.x+3-x+1=15-3x

问题描述:

解方程

x+3
3
-
x−1
6
=
5−x
2
,去分母所得结论正确的是(  )
A. x+3-x+1=15-x
B. 2x+6-x+1=15-3x
C. x+6-x-1=15-x
D. x+3-x+1=15-3x

∵方程两边同乘以6,得2(x+3)-(x-1)=3(5-x),
∴2x+6-x+1=15-3x.
故选B.