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-6/7x>4/7-1
-6/7x>3/7 /: (-6/7)
x<-1/2
-6/7x>4/7-1
-6/7x>-3/7 /:(-6/7)
x>-3/7*(-7/6)
x<3/6
x<1/2
-6/7x>4/7-1
-6/7x>3/7 /: (-6/7)
x<-1/2