Answer:
P = 2X + 3Y
Step-by-step explanation:
Perimeter of a triangle is the sum of its three sides, so:
P is the side to find
4x + 3y = (X-Y) + (X+Y) + P
We can to eliminate -y and y, so:
4x +3y = 2X + P
Reducing terms:
4x - 2x + 3y = P
P = 2X + 3Y
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