化简:(1-3m)/2 - (2m+5)/3 + (3+2m)/4_数学解答

化简:(1-3m)/2 - (2m+5)/3 + (3+2m)/4

人气：336 ℃　时间：2020-03-30 22:26:20

解答

(1-3m)/2 - (2m+5)/3 + (3+2m)/4
=[6(1-3m)-4(2m+5)+3(3+2m)]/12
=(-5-20m)/12
=-(5+20m)/12