解方程:-2/5(x-3)+3(2x-3/50=-2x+5
问题描述:
解方程:-2/5(x-3)+3(2x-3/50=-2x+5
答
:-2/5(x-3)+3(2x-3/50=-2x+5
两边同乘以5,得-2X+6+30X-9/10+10X-25=0
解,得x=199/380
答
-2/5(x-3)+3(2x-3/50)=-2x+5
6/5-2x/5+6x-9/50=5-2x
60-20x+300x-9=250-100x
380x=311
x=311/380