Question 237636
-x/7 + 4 > 3x
-x/7-3x>-4
(-x-3x*7)/7>-4
(-x-21x)/7>-4
-22x>-28
x<-28/-22 [Note: the > sign changes from > to < when dividing by a negative value.
x<14/11 ans.
Proof:
Let x=13/11
-13/11*1/7+4>3*13/11
-13/77+4>39/11
-.1688+4>3.545
3.8312>3.545