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xBabyGirlx Group Title

Using elimination, substitution solve A A. 3x - 9y = 3 6x - 3y = (-24)

  • one year ago
  • one year ago

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  1. xBabyGirlx Group Title
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    @hereweg0

    • one year ago
  2. hereweg0 Group Title
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    it belongs in the math section

    • one year ago
  3. hereweg0 Group Title
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    but okay. 3x - 9y = 3 lets get x alone. 3x=3+9y

    • one year ago
  4. xBabyGirlx Group Title
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    yeah i dont care

    • one year ago
  5. kasim17 Group Title
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    1)Elimination by coefficient method 3x - 9y = 3 .....( i ) 6x - 3y = - 24 ...( ii ) Multiplying ( i ) by 2,we get 6x - 18y = 6 .... ( iii ) Subtracting ( ii ) from ( iii ),we get 6x - 18y = 6 6x - 3y = - 24 (-) (+) (+) --------------------- - 15y = 30 y = - 2 Substituting y = - 2 in ( ii ),we get 6x - 3(- 2) = - 24 6x + 6 = - 24 6x = - 30 x = - 5 x = - 5 and y = - 2 is the solution of given simultaneous equations. 2)Substitution method 3x - 9y = 3 Dividing throughout by 3,we get x - 3y = 1 x = 1 + 3y ..... ( i ) 6x - 3y = - 24 .....( ii ) Substituting ( i ) in ( ii ),we get 6(1 + 3y) - 3y = - 24 6 + 18y - 3y = - 24 15y = - 30 y = - 2 Substituting y = - 2 in ( i ),we get x = 1 + 3y x = 1 + 3(- 2) x = 1 - 6 x = - 5 x = - 5 and y = - 2 is the solution of given simultaneous equations. According to me both the methods are efficient and easy. It varies from individual to individual to decide which method is efficient. So my opinion to you is that learn both the methods and practice hard and try to master them. !!!HOPE I HELPED!!!!

    • one year ago
  6. Andy454 Group Title
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    belong in math

    • one year ago
  7. hereweg0 Group Title
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    hmm nice haha

    • one year ago
  8. Andy454 Group Title
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    this is science....

    • one year ago
  9. xBabyGirlx Group Title
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    Thanks kasim17

    • one year ago
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