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anonymous

  • 5 years ago

someone plz help me solve complete the ordered triple 4a+3b+c=-9 a-3b+2c=27 11a-2b+3c=28 step by step so i can learn how to do on my own i keep getting the wrong answer

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  1. anonymous
    • 5 years ago
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    subtract twice equation 1 from equation 2 and thrice equation 1 from equation 3. that should eliminate c and you will have two new equations with just a and b. solve for a and b and substitute their values in one of the original equations to get c

  2. anonymous
    • 5 years ago
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    your suppose to add them not subtract i thought

  3. anonymous
    • 5 years ago
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    no you can manipulate them any way you like. subtraction is simply negative adding. 4-2 is 4+(-2). Think about it this way then add negative twiceequation 1 from equation 2 and negative thrice equation 1 from equation 3. that should eliminate c and you will have two new equations with just a and b. solve for a and b and substitute their values in one of the original equations to get c

  4. anonymous
    • 5 years ago
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    http://www.flickr.com/photos/62007598 @N03/5645382314/

  5. anonymous
    • 5 years ago
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    I'm not good with tye , writing more easy for me

  6. anonymous
    • 5 years ago
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    it says its a bad link

  7. anonymous
    • 5 years ago
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    you can see?

  8. anonymous
    • 5 years ago
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    I see very good

  9. anonymous
    • 5 years ago
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    it says page not found oops looks like you followed a bad link

  10. anonymous
    • 5 years ago
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    let tye

  11. anonymous
    • 5 years ago
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    ...........4a=3b+c=-9 ...........a-3b+2c=27 Add....5a = 3c =18 1st + 3rd time 2 to the frist equation 8a+6b+2c=-18 time (3)*3rd rquation 33a-6b+9c=84 ...............8a+6b+2c=-18 ..............33a-6b+9c=84 add...........a+11c=66 time(11) to 5a+3c=18 ..............55a+33c=198 time(-3) to 41a +11c=66 ...............-123a-33c=-198 ................55a+33c=198 ...............-123a-33c=-198 add...........-69a=0 ......................a=0 sutitution a=0 find 5(0)=3c=18 ...........c=6 sutitution c=6 find find b 11(0)-2b+3(6)=28 0 -2b+18=28 ...........-2b=28-18 ...............b=10/-2 ...............b=-5 a=0...., ....5,......c= 6

  12. anonymous
    • 5 years ago
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    Add....5a = 3c =18 I tye wrong: 5a+3c=18 I told you I'm not good tye you check I may tye wrong

  13. anonymous
    • 5 years ago
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    a=0 b=-5 c=6

  14. anonymous
    • 5 years ago
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    ...........4a=3b+c=-9 ...........a-3b+2c=27 Add....5a +3c =18 1st + 3rd time 2 to the frist equation 8a+6b+2c=-18 time (3)*3rd rquation 33a-6b+9c=84 ...............8a+6b+2c=-18 ..............33a-6b+9c=84 add........41a+11c=66 time(11) to 5a+3c=18 ..............55a+33c=198 time(-3) to 41a +11c=66 ...............-123a-33c=-198 ................55a+33c=198 ...............-123a-33c=-198 add...........-69a=0 ......................a=0 sutitution a=0 find 5(0)=3c=18 ...........c=6 sutitution c=6 find find b 11(0)-2b+3(6)=28 0 -2b+18=28 ...........-2b=28-18 ...............b=10/-2 ...............b=-5 a=0...., ..b=-,......c= 6 I check every thing is correct now I have to go now bye

  15. anonymous
    • 5 years ago
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    you still here

  16. anonymous
    • 5 years ago
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    check again http://www.flickr.com/photos/62007598 @N03/5645382314/

  17. anonymous
    • 5 years ago
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    http://img857.imageshack.us/i/mathk.jpg/

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