0.1X-0.2在除0.02-X+1除0.5等于3(0.1X-0.2)/0.02-(X+1)/0.5=350(0.1x-0.2)-2(x+1)=35x-10-2x-2=35x-2x=3+10+23x=15x=5
(0.1x-0.2)÷[(0.02-x+1)÷0.5]=3是这样吗?那你把[(0.02-x+1)÷0.5]移到等号右边就好解了