Question 212447
-5<4x-1<11
-5+1<4X<11+1
-4<4X<12
-4/4<X<12/4
-1<X<3
X IS GREATER THAN -1 & LESS THAN 3.
PROOFS:
LET X=-.9 & X=2.9
-5<4*-.9-1<11
-5<-3.6-1<11
-5<-4.6<11
-----------
-5<4*2.9-1<11
-5<11.6-1<11
-5<10.6<11