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9(2r-5)-3<7r-4

 Sep 15, 2017

Best Answer 

 #1
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First of all, act like the < is a =. this helps for the first part. so the equasion would look like 9(2r-5)-3=7r-4 

Now simplfy it.

 

9(2r-5)-3<7r-4

 

18r-45-3=7r-4

 

18r-48=7r-4

Now get r on one side.

 

18r-7r-48=7r-7r-4                        r<4 is the answer

 

11r-48=-4

Get r alone

 

11r-48+48=-4+48

 

11r=44    r=4 r<4  Divide and get the answer for r. Now you go back and see if the inequality changes at all (which it doesn't.)

 Sep 15, 2017
 #1
avatar
0
Best Answer

First of all, act like the < is a =. this helps for the first part. so the equasion would look like 9(2r-5)-3=7r-4 

Now simplfy it.

 

9(2r-5)-3<7r-4

 

18r-45-3=7r-4

 

18r-48=7r-4

Now get r on one side.

 

18r-7r-48=7r-7r-4                        r<4 is the answer

 

11r-48=-4

Get r alone

 

11r-48+48=-4+48

 

11r=44    r=4 r<4  Divide and get the answer for r. Now you go back and see if the inequality changes at all (which it doesn't.)

Guest Sep 15, 2017

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