-15<3x+6<-12

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1 Answer

- 15 < 3x + 6 <  - 12

 - 6          - 6       - 6

-----------------------------

- 21 < 3x  < - 18

- 21/3 < 3x/3 < - 18/3

- 7 < x < - 6

x > - 7 and x < - 6

( - 7, - 6)

                                 - 7                   - 6

      -------------------------(----------------)--------------------------                            

 

by Level 8 User (36.8k points)

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