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anonymous

  • one year ago

Help! Rewrite the equation in ax+by=c form

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  1. anonymous
    • one year ago
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  2. anonymous
    • one year ago
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    same method as the last one distribute first

  3. anonymous
    • one year ago
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    @satellite73 ohh okay thanks

  4. anonymous
    • one year ago
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    i can check your answer if you like

  5. anonymous
    • one year ago
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    Okay sounds good, Give me a minute

  6. anonymous
    • one year ago
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    I got 2x+y=2

  7. anonymous
    • one year ago
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    lets go slow

  8. anonymous
    • one year ago
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    what do you get when you remove the partentheses using the distributive law for \[2(x-3)\]?

  9. anonymous
    • one year ago
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    2x-6

  10. anonymous
    • one year ago
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    ok good

  11. anonymous
    • one year ago
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    so now we are at \[y+4=2x-6\]

  12. anonymous
    • one year ago
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    Do we move all the variables to one side?

  13. anonymous
    • one year ago
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    yes and no

  14. anonymous
    • one year ago
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    we don't "move" in math, just add, subtract, multiply, divide

  15. anonymous
    • one year ago
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    you want the variables on the left or the right?

  16. anonymous
    • one year ago
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    left

  17. anonymous
    • one year ago
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    ok so don't "move" the \(2x\) to the left, "subtract" \(2x\) from both sides

  18. anonymous
    • one year ago
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    yes, got that. so 2x-y+4=6

  19. anonymous
    • one year ago
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    then we subtract -4 to both sides? right?

  20. anonymous
    • one year ago
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    the minus sign goes in front of the \(2x\) not behind it \[-2x+y+4=-6\]

  21. anonymous
    • one year ago
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    Ohh okay! I see now.

  22. anonymous
    • one year ago
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    now you would subtract the \(4x\) from both sides also don't drop the minus sign in front of the \(-6\) on the right

  23. anonymous
    • one year ago
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    oops i mean subtract \(4\) from both sides, sorry b

  24. anonymous
    • one year ago
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    Right no worries so, -2x+y=-10

  25. anonymous
    • one year ago
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    right maybe one more step, maybe not

  26. anonymous
    • one year ago
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    some people like the coefficient of the x term to be positive if so, just change the sign of everything, go form \[-2x+y=-10\] to \[2x-y=10\] same equation

  27. anonymous
    • one year ago
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    Okay. I understand this more now

  28. anonymous
    • one year ago
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    good!

  29. anonymous
    • one year ago
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    Thanks!

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