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henaoalexandra

  • 2 years ago

0.26(x+40)+0.37(x+20)=-20

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  1. tkhunny
    • 2 years ago
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    Were you planning to solve that? Let's see it!

  2. henaoalexandra
    • 2 years ago
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    @tkhunny i dont know how to. i got the wrong answer i just want to see the steps. can you help me?

  3. tkhunny
    • 2 years ago
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    Doesn't work that way. Prove that you can do SOEMTHING. 0.26(x+40)+0.37(x+20)=-20 Do one piece at a time. 0.26(x+40) Can you expand that?

  4. henaoalexandra
    • 2 years ago
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    .26x+10.4

  5. henaoalexandra
    • 2 years ago
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    @tkhunny

  6. tkhunny
    • 2 years ago
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    Perfect. Now the next piece. 0.37(x+20)

  7. henaoalexandra
    • 2 years ago
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    @tkhunny .37x + 7.4

  8. tkhunny
    • 2 years ago
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    There you have it. Which part of that could you not do previously? Now add them all up! 0.26x + 10.4 + 0.37x + 7.4

  9. henaoalexandra
    • 2 years ago
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    @tkhunny 3+0.11x=-20 -3 -3 0.11x=-23 divide 0.11x x=-209

  10. tkhunny
    • 2 years ago
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    0.26x + 0.37x = 0.63x 10.4 + 7.4 = 17.8 Why are you feeling a need to subtract? Did you write the problem statement incorrectly?

  11. henaoalexandra
    • 2 years ago
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    @tkhunny ohhhhh okay thank you i get it. can you help me get through other ones please?

  12. henaoalexandra
    • 2 years ago
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    2/5x-1/3x=2 @tkhunny

  13. tkhunny
    • 2 years ago
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    You'll have to be more clear. is "2/5x" this \(\dfrac{2}{5x}\) or this\(\dfrac{2}{5}x\)? Use parentheses to be clear.

  14. henaoalexandra
    • 2 years ago
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    \[\frac{ 2 }{ 5 }x\]

  15. henaoalexandra
    • 2 years ago
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    @tkhunny

  16. tkhunny
    • 2 years ago
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    Now we add fractions? Denominators are 5 and 3. Go!

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