The third side of a triangle whose perimeter is 17n + 11 and the other two sides are (5n + 6) and (4n + 6) is 8n
The perimeter of any shape is total distance around the shape
In the triangle shown:
The perimeter = 17n + 11
The first side = 5n + 6
The second side = 4n + 5
Let the third side be represented by M
The perimeter = (The first side) + (The second side) + (The third side)
Substitute perimeter = 17n + 11, first side = 5n + 6, second side = 4n + 5, and third side = M into the equation above
17n + 11 = (5n + 6) + (4n + 5) + M
M = 17n + 11 - 5n - 6 - 4n - 5
Collect like terms
M = 17n - 5n - 4n + 11 - 6 - 5
M = 8n
Therefore, the third side of a triangle whose perimeter is 17n + 11 and the other two sides are (5n + 6) and (4n + 6) is 8n
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