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Mathematics, 13.12.2021 22:30 estefaniapenalo

The perimeter of a triangle is 56. The side lengths are x + 4, 3x + 7, and x + 9. What is the value of x?

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The perimeter of a triangle is 56. The side lengths are x + 4, 3x + 7, and x + 9. What is the value...
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