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twitch

  • 2 years ago

Need Helpp MEdalls!!!!!

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  1. twitch
    • 2 years ago
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    \[\frac{ -4+20x }{ 4 }\] Simplify ?

  2. ZeHanz
    • 2 years ago
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    Divide both -4 and 20x by 4

  3. twitch
    • 2 years ago
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    but 4 doesnt goin to -4

  4. ZeHanz
    • 2 years ago
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    It does: suppose you want to check a division, e.g. 18/3=6. Then you know 18 = 6*3. Now -4/4 = ???, then 4 * ???= -4. What number is ???

  5. twitch
    • 2 years ago
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    1

  6. ZeHanz
    • 2 years ago
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    No, because 4*1=4 and not -4

  7. twitch
    • 2 years ago
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    -1

  8. ZeHanz
    • 2 years ago
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    OK, so -4/4 = -1 Now you have to do: 20x/4

  9. twitch
    • 2 years ago
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    5

  10. ZeHanz
    • 2 years ago
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    You lost x

  11. twitch
    • 2 years ago
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    5x

  12. ZeHanz
    • 2 years ago
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    Done!

  13. twitch
    • 2 years ago
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    so thats my final answer are my final equation

  14. ZeHanz
    • 2 years ago
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    You have -4 and 5x, so the final answer is... -4+5x

  15. twitch
    • 2 years ago
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    how bout this one \[-\frac{ 1 }{ 2 }(4-6a)\]

  16. ZeHanz
    • 2 years ago
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    Use the distributive property: a(b-c)=ab-ac

  17. twitch
    • 2 years ago
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    I dont knoe the distributie Prop

  18. ZeHanz
    • 2 years ago
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    It tells you how to get rid of the brackets! So you have to multiply -1/2 with 4 and also multiply -1/2 with -6a

  19. twitch
    • 2 years ago
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    okay I see

  20. ZeHanz
    • 2 years ago
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    What do you get?

  21. twitch
    • 2 years ago
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    how do I multiply a fraction in to a number

  22. ZeHanz
    • 2 years ago
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    Just forget the "-" for a while. 1/2 * 4 means you have four halves. How many is that?

  23. twitch
    • 2 years ago
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    2 wholes

  24. ZeHanz
    • 2 years ago
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    OK. Now remember that if you multiply a negative number with a positive number, the outcome is negative. So: -1/2 * 4 = ...

  25. twitch
    • 2 years ago
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    -2

  26. ZeHanz
    • 2 years ago
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    Right!, now the other one...

  27. twitch
    • 2 years ago
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    so for the other half it be-3 the i would be left with(-2- -3) and my answer be -5

  28. ZeHanz
    • 2 years ago
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    You have to multiply, so -1/2 * -6a = ...

  29. twitch
    • 2 years ago
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    6 isn't negative that was the subtraction sign

  30. ZeHanz
    • 2 years ago
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    OK, so save it for later. So: -1/2 * 6a = ...

  31. twitch
    • 2 years ago
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    -3

  32. ZeHanz
    • 2 years ago
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    You lost the a

  33. twitch
    • 2 years ago
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    -3a ugh srry:p

  34. twitch
    • 2 years ago
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    so then my equation would be(-2 - -3a)

  35. twitch
    • 2 years ago
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    the my answer should be -5a right

  36. ZeHanz
    • 2 years ago
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    No, -2 hasn't got an a with it, so you can't add it to 3a

  37. ZeHanz
    • 2 years ago
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    So it would be -2+3a

  38. ZeHanz
    • 2 years ago
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    -- = +

  39. twitch
    • 2 years ago
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    so it be 1a right

  40. ZeHanz
    • 2 years ago
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    No, it would be -2+3a. This cannot be written shorter! If it was -2a+3a this would be 1a or a.

  41. twitch
    • 2 years ago
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    oh okay got it

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