问题
选择题
如果方程2x-1=11,那么4x+1.5x+11=( )
A.47
B.44
C.38.5
D.43
答案
2x-1=11,
2x-1+1=11+1,
2x=12,
2x÷2=12÷2,
x=6;
4x+1.5x+11,
=4×6+1.5×6+11,
=24+9+11,
=44.
故选B.
如果方程2x-1=11,那么4x+1.5x+11=( )
A.47
B.44
C.38.5
D.43
2x-1=11,
2x-1+1=11+1,
2x=12,
2x÷2=12÷2,
x=6;
4x+1.5x+11,
=4×6+1.5×6+11,
=24+9+11,
=44.
故选B.