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anonymous

  • 4 years ago

solve using elimination method: 2x – y = 8, y = 5x + 3

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  1. anonymous
    • 4 years ago
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    do I change 2nd equation to : 5x -y =3? I am confused

  2. jhonyy9
    • 4 years ago
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    so yes you are right and after this for we can eliminet the term of y so for we need multiply first equation by -1 and after this you assum thses two equations

  3. jhonyy9
    • 4 years ago
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    2x-y=8 5x-y=-3

  4. jhonyy9
    • 4 years ago
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    sorry 5x-y=-3 will be correct

  5. anonymous
    • 4 years ago
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    so, how do I eliminate for the 'y' variable? do I multiply the reciprocal of one 'y' variable to one equation? Like for the 1st equation I would multiply '1' to eliminate the 'y'?

  6. anonymous
    • 4 years ago
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    oh wait...I meant '-1' instead of 1

  7. jhonyy9
    • 4 years ago
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    so 2x-y=8 5x-y=-3 multiply by -1 2x-y=8 -5x+y=3 ----------- -3x 0 =11 3x= - 11 x= -11/3

  8. jhonyy9
    • 4 years ago
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    ok ?

  9. jhonyy9
    • 4 years ago
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    and now calcule the y

  10. anonymous
    • 4 years ago
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    then I get -2x + y = -8, then I add or subtract to 5x - y = -3? ---oh ok tyty

  11. jhonyy9
    • 4 years ago
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    and now you can calcule the y yes ?

  12. jhonyy9
    • 4 years ago
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    camon i will wait it

  13. jhonyy9
    • 4 years ago
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    so if right ok than thank you the medal good luck bye

  14. jhonyy9
    • 4 years ago
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    so if right ok than thank you the medal good luck bye

  15. jhonyy9
    • 4 years ago
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    so y= 5x+3 y=5(-11/3) +3 =-55/3 +3 = (-55+9)/3 = -46/3

  16. jhonyy9
    • 4 years ago
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    ok ?

  17. anonymous
    • 4 years ago
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    yes thank you!

  18. jhonyy9
    • 4 years ago
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    ok medal please

  19. anonymous
    • 4 years ago
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    are you helping out people just to get a medal? that's a little wrong. you should help others out in the spirit of helpfulness, not greed!

  20. jhonyy9
    • 4 years ago
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    no just for medal but just than the exersice will be signed solved right sure

  21. jhonyy9
    • 4 years ago
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    or you need again learning on this website how make the things

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