Question

The perimeter of a triangle is 7p- 8p + 9 and two of its sides are 2p - p + 1 and 11p? - 3p + 5. Find the third side of the triangle.​

Answer 1

Answer:

$(2p - p + 1) + (11p - 3p + 5) + x = 7p - 8p + 5 \\ p + 1 + 8p + 5 + x = - p + 5 \\ 9p + 6 + x = - p + 5 \\ 9p + p + x = 5 - 6 \\ x = - 10p - 1$

so the answer is (-10)p - 1

Step-by-step explanation:

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