(X-1)/3-(2X-1)/2=1 (4X+3)/8-(2X-5)=1/2*(1-X)_数学解答

(X-1)/3-(2X-1)/2=1 (4X+3)/8-(2X-5)=1/2*(1-X)

人气：270 ℃　时间：2019-10-27 09:04:51

解答

(X-1)/3-(2X-1)/2=1
两边乘6
2X-2-6X+3=6
6X-2X=-2+3-6
4X=-5
X=-5/4
(4X+3)/8-(2X-5)=1/2*(1-X)
两边乘8
4X+3-16X+40=4-4X
16X-4X-4X=3+40-4
12X=39
X=39÷12
X=13/4