把那个大于或小于号当等号,移动、合并同类项,X移边时大于变小于,小于变大于;就可得出两式的X两边的域值了;
X/3>2X+2/5 =》2X-X/3
1-(X+1)/2〈0 =》x/2+1/2>1 =》x>(1-1/2)*2 =》x>1