(4a+3b+1)÷2-(2a+b-1)

问题描述:

(4a+3b+1)÷2-(2a+b-1)
等于多少?

(4a+3b+1)÷2-(2a+b-1)
=2a+(3/2)b+1/2-2a-b+1
=(1/2)b+3/2
=0.5b+1.5