SOLUTION: 3r+1<4r+7

Algebra ->  Linear-equations -> SOLUTION: 3r+1<4r+7      Log On


   

Question 105362: 3r+1<4r+7
Answer by checkley75(3666) About Me  (Show Source):
You can put this solution on YOUR website!
3R+1<4R+7
3R-4R<7-1
-R<6 DIVIDE BOTH SIDES BY -1 WHICH CHANGES THE < TO A >.
R>-6
PROOF
LET R=-5
3*-5+1<4*-5+7
-15+1<-20+7
-14<-13