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anonymous

  • 5 years ago

solve by the addition method 2x+y=11 x-y=11

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  1. anonymous
    • 5 years ago
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    add both the equations

  2. anonymous
    • 5 years ago
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    it will be 3x = 22 so x = 22/3 then put the value of x in any of the above equation to get the value of y

  3. anonymous
    • 5 years ago
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    but whats the value of y??

  4. anonymous
    • 5 years ago
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    13/3??

  5. anonymous
    • 5 years ago
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    from equation (ii) x - y = 11 so y = x - 11 the value of x is 22/3 so the value of y will be 22/3 - 11

  6. anonymous
    • 5 years ago
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    y = -11/3

  7. anonymous
    • 5 years ago
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    ok thank you can u help me to solve by graphing?? only this question?? 3x+4y=20 3x-2y=8

  8. anonymous
    • 5 years ago
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    okay, but you need to know how to graph straight lines to solve using graphing

  9. anonymous
    • 5 years ago
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    do you know how to graph straight lines???

  10. anonymous
    • 5 years ago
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    yes but i just need the points thats all

  11. anonymous
    • 5 years ago
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    yes, then the point where the two lines intersect is your required answer

  12. anonymous
    • 5 years ago
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    yes but what are these points??

  13. anonymous
    • 5 years ago
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    okay, i'll tell you from the very start. do you have graph paper right now???

  14. anonymous
    • 5 years ago
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    no

  15. anonymous
    • 5 years ago
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    ill make one

  16. anonymous
    • 5 years ago
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    do you have to solve this specific question using graph???

  17. anonymous
    • 5 years ago
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    no i only need the points the answer :(

  18. anonymous
    • 5 years ago
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    yes, right, i think :P lol

  19. anonymous
    • 5 years ago
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    please tell me the points!!

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spraguer (Moderator)
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