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kumar2006

  • 4 years ago

What is the solution of the system of equations 2x − 5y = 11 and −2x + 3y = −9? (1) (−3,−1) (3) (3,−1) (2) (−1,3) (4) (3,1)

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  1. kumar2006
    • 4 years ago
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    Show Work Please!!!

  2. LagrangeSon678
    • 4 years ago
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    were gonna do this together okay, real simple, first, we should add the first equation to the second equation okay: 2x − 5y = 11 −2x + 3y = −9 + --------------------- What do you get?

  3. kumar2006
    • 4 years ago
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    -4x8y-2

  4. kumar2006
    • 4 years ago
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    ?

  5. LagrangeSon678
    • 4 years ago
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    really? just look at this we have to add it like we would normally, it dosent matter if there are x and y's (2x)+(-2x)=0

  6. kumar2006
    • 4 years ago
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    Fine I got the first step

  7. LagrangeSon678
    • 4 years ago
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    2x − 5y = 11 −2x + 3y = −9 + --------------------- -2y=2

  8. LagrangeSon678
    • 4 years ago
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    now can you find what y=?

  9. kumar2006
    • 4 years ago
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    y = -1,3

  10. kumar2006
    • 4 years ago
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    ?

  11. LagrangeSon678
    • 4 years ago
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    what? how did you get y=-1,3, from -2y=2, you have to solve for y

  12. kumar2006
    • 4 years ago
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    I don't know how to solve for Y

  13. LagrangeSon678
    • 4 years ago
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    if you have -2y=2, you dont know how to get y by ?itself

  14. kumar2006
    • 4 years ago
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    Nope

  15. LagrangeSon678
    • 4 years ago
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    okay if i have -2y=2, then what should be done is divide both sidezs by -2, that gives us y=-1

  16. LagrangeSon678
    • 4 years ago
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    now, simply replace y=-1 into one of your orginal equation and get x

  17. kumar2006
    • 4 years ago
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    What will be my final answer?

  18. kumar2006
    • 4 years ago
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    ?

  19. LagrangeSon678
    • 4 years ago
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    you have to solve this :2x − 5(-1) = 11

  20. kumar2006
    • 4 years ago
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    Thanks for everything but I rather get the answer

  21. LagrangeSon678
    • 4 years ago
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    yeah, your gonna get far

  22. kumar2006
    • 4 years ago
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    Thank You Sir.

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