Destinyyyy
  • Destinyyyy
Where did I go wrong?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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Destinyyyy
  • Destinyyyy
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
Vocaloid
  • Vocaloid
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
Destinyyyy
  • Destinyyyy
I distributed the negative sign first

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Vocaloid
  • Vocaloid
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...
Vocaloid
  • Vocaloid
is that clear?
Destinyyyy
  • Destinyyyy
Yes one sec
Destinyyyy
  • Destinyyyy
x=-3
Vocaloid
  • Vocaloid
yup ~ good job
Destinyyyy
  • Destinyyyy
Thank you.

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