3(p + 6) or 3p + 18
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6(p + 3) = 6p + 18
3(p - 6) 3p - 18
Let's denote the perimeter of the first triangle as P. Since the triangles are congruent, the perimeter of the second triangle is also P. The sum of their perimeters is then 2P. According to the given statement, this sum is three times the perimeter of the first triangle. So we have the equation 2P = 3P. Simplifying, we find that P = 0, which is not a valid solution. Therefore, there is no triangle for which the sum of the perimeters of two congruent triangles is three times the perimeter of the first triangle.
The expression that represents two times the sum of p and 8 is 2(p + 8).
It is: 4*(q+p)