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anonymous

  • one year ago

i need help i don't know how to do this What is the value of a?

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  1. anonymous
    • one year ago
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    here is the problem

  2. anonymous
    • one year ago
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    giving medal

  3. KatnissStyles000
    • one year ago
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    wait thats the problem?

  4. anonymous
    • one year ago
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    whats the value of a?

  5. anonymous
    • one year ago
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    16 maybe im not sure

  6. freckles
    • one year ago
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    try using the distributive property on -2(a-8) first.

  7. anonymous
    • one year ago
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    a = 5

  8. anonymous
    • one year ago
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    hmmm thats the deal i dont under stand how this works im not the biggest on math

  9. freckles
    • one year ago
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    All the distributive property says is a(b+c)=ab+ac take the factor on the outside and multiply on all terms by it on the inside the ( ). so -2(a-8)=?

  10. anonymous
    • one year ago
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    ok so multiply thes numbers

  11. anonymous
    • one year ago
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    -16

  12. freckles
    • one year ago
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    -2(a-8) multiply every term inside the ( ) by -2 so you have -2*a-2(-8) -2a+16

  13. freckles
    • one year ago
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    so rewrote your equation as: -2a+16+6a=36

  14. freckles
    • one year ago
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    now combine like terms on the left hand side

  15. freckles
    • one year ago
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    so you ask yourself what is -2a+6a or 6a-2a (since these are the same value)?

  16. anonymous
    • one year ago
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    ok so i got 20 when i added every thing except the letters

  17. freckles
    • one year ago
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    oh do you mean you did 36-16 which is 20?

  18. anonymous
    • one year ago
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    bu the letters are 16 each

  19. anonymous
    • one year ago
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    yes

  20. CuriousQuestions
    • one year ago
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    a=5 for definate

  21. freckles
    • one year ago
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    ok so you still have -2a+16+6a=36 -2a+6a=36-16 -2a+6a=20 or 6a-2a=20 if you reorder the left hand side

  22. freckles
    • one year ago
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    6-2=?

  23. anonymous
    • one year ago
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    4

  24. freckles
    • one year ago
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    right so 6a-2a=(6-2)a=4a

  25. freckles
    • one year ago
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    \[4a=20\]

  26. freckles
    • one year ago
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    now you finally get to see how everyone is getting a=5

  27. anonymous
    • one year ago
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    ohhh ok i get it thatnk you soo much

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