4(1/2a+1)-3/2(2a-1)+1/6(3a+2)

问题描述:

4(1/2a+1)-3/2(2a-1)+1/6(3a+2)

原式=2a+4-3a+3/2+1/2a+1/3
=(2a-3a+1/2a)+(4+3/2+1/3)
=-1/2a+47/6