hongkong90 hongkong90
  • 15-11-2018
  • Mathematics
contestada

Please help |3r -6| =21

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RaneKillingsworth
RaneKillingsworth RaneKillingsworth
  • 15-11-2018

3r-6=-21

3r-6+6=-21+6 (Add 6 to both sides...)

3r=-15

r=-5


3r-6=21

3r-6+6=21+6 (Add 6 to both sides...)

3r=27

r=9



r=-5 or r=9

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abramsboys3
abramsboys3 abramsboys3
  • 15-11-2018

R=9 this is the answer to the question

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