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hali12

  • 3 years ago

PLEASE HELP IM GONNA FAIL MATH Explain the procedure when using the elimination method to get rid of one of the variables

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  1. Firejay5
    • 3 years ago
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    So explain how to do elimination

  2. hali12
    • 3 years ago
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    I'll give u a medal if u just pls give methe anwser

  3. XxhannahxX
    • 3 years ago
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    you must try to get one of the variables to equal 0

  4. XxhannahxX
    • 3 years ago
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    do you need an example?

  5. JoãoVitorMC
    • 3 years ago
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    http://www.basic-mathematics.com/elimination-method.html

  6. Firejay5
    • 3 years ago
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    For example if you had 4a + 2b = 15 2a + 2b = 7 you would need to get the B's to equal zero in this case

  7. Freak7820
    • 3 years ago
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    if your dealing with systems of equations: http://www.wyzant.com/Help/Math/Precalculus/Systems_Of_Equations/Elimination_Method.aspx

  8. Firejay5
    • 3 years ago
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    so you would (2a + 2b = 7) *-1 and it would be this: -2a - 2b = -7

  9. Firejay5
    • 3 years ago
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    the B's now cancel out. 4a - -2a = 6a = 8 <---- 15 - 7 = 8

  10. Firejay5
    • 3 years ago
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    the answer would actually be 2a 4a + -2a = 2a = 22<---- 15 + 7 = 22. 2a = 22 then divide 2 from both sides to get A = 11. Then insert 11 into both equations and solve to get y

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