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anonymous

  • one year ago

Medal Solve by the substitution method 5x + 3y=8 3x +y = 8

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  1. pooja195
    • one year ago
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    3x +y = 8

  2. pooja195
    • one year ago
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    What can we do so that the Y will be alone?

  3. anonymous
    • one year ago
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    move it to the right side

  4. anonymous
    • one year ago
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    or move the 3x to the other side

  5. pooja195
    • one year ago
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    good y=-3x+8 whats next?

  6. anonymous
    • one year ago
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    sub in the other equation

  7. pooja195
    • one year ago
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    good :) \[\huge~5x + 3(-3x+8)=8 \]

  8. pooja195
    • one year ago
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    Solve that

  9. anonymous
    • one year ago
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    5x -9x + 24 = 8

  10. pooja195
    • one year ago
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    now combine the like terms :)

  11. anonymous
    • one year ago
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    5x - 9x = 8 -24

  12. pooja195
    • one year ago
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    ok 8-24=?

  13. anonymous
    • one year ago
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    -4x / -4x = -16 / -4

  14. anonymous
    • one year ago
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    answer is 4

  15. anonymous
    • one year ago
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    x = 4

  16. pooja195
    • one year ago
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    Good now what?

  17. anonymous
    • one year ago
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    we sub in 4 to the other equation

  18. pooja195
    • one year ago
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    good \[\huge~y=-3(4)+8 \]

  19. pooja195
    • one year ago
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    Solve

  20. anonymous
    • one year ago
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    y = -12x + 8

  21. pooja195
    • one year ago
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    Where did u get x from?

  22. pooja195
    • one year ago
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    Remeber we substituted 4 in place of x

  23. anonymous
    • one year ago
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    ohh yeah sorry

  24. anonymous
    • one year ago
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    so what is the next step

  25. pooja195
    • one year ago
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    Solve :) y=-3(4)+8 -3 x 4 = ?

  26. anonymous
    • one year ago
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    -12

  27. pooja195
    • one year ago
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    -12 + 8 = ?

  28. anonymous
    • one year ago
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    y = -12 + 8

  29. pooja195
    • one year ago
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    -12+8=?

  30. anonymous
    • one year ago
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    -4

  31. pooja195
    • one year ago
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    good :) so x= ? y=?

  32. anonymous
    • one year ago
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    x= 4 and y= -4

  33. pooja195
    • one year ago
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    yep :)

  34. pooja195
    • one year ago
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    (4,-4)

  35. anonymous
    • one year ago
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    so is this the answer?

  36. pooja195
    • one year ago
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    yes

  37. anonymous
    • one year ago
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    thank you soo much :)

  38. pooja195
    • one year ago
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    :)

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