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Where did I go wrong?

Mathematics
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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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
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
I distributed the negative sign first

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

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