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Destinyyyy

  • one year ago

Where did I go wrong?

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  1. Destinyyyy
    • one year ago
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    Solve the equation. 3x+9- [7x-{11(x-1)-5}] = 4 (x-4) 3x+9- [7x-{11x-11-5}] = 4x-16 3x+9-[7x-{11x-16}] =4x-16 3x+9- [7x{-11+16}] =4x -16 3x+9-[-77x +112] = 4x-16 3x+9 +77x-112= 4x-16 80x-103=4x-16 76x-103=-16 76x=87

  2. Vocaloid
    • one year ago
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    third step: 3x+9-[7x-{11x-16}] =4x-16 3x+9- [7x{-11+16}] =4x -16 you can't multiply 7x and 11x, since there's a subtraction sign between them

  3. Destinyyyy
    • one year ago
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    I distributed the negative sign first

  4. Vocaloid
    • one year ago
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    yes, you are supposed to distribute the negative sign, but you still can't multiply 7x and 11x the correct way to proceed: 3x+9-[7x-{11x-16}] =4x-16 distributing the negative sign gives us: 3x+9- [7x-11x+16] =4x -16 then we combine like terms within the bracket 3x+9- [-4x+16] =4x -16 and then we keep going...

  5. Vocaloid
    • one year ago
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    is that clear?

  6. Destinyyyy
    • one year ago
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    Yes one sec

  7. Destinyyyy
    • one year ago
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    x=-3

  8. Vocaloid
    • one year ago
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    yup ~ good job

  9. Destinyyyy
    • one year ago
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    Thank you.

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