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The perimeter of a triangle is 6x. One side is x+3 and another side is 2x+4. What is the length of the 3rd side?

Respuesta :

Let y = the length of the 3rd side
x+3 + 2x+4 + y = 6x
x + 2x + 3 + 4 + y = 6x
3x + 7 +y = 6x
7 + y = 3x
y = 3x - 7
The length of the third side in terms of x is 3x-7

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