Question

The expression 17n + 11 represents the perimeter (in feet) of the triangle. Two sides are measured at 5n + 6 and 4n + 5.
Write an expression that represents the measure of the third side.

Answer 1

So subract the expressions for the 2 known sides from the perimeter.

Answer 2

17n+11-(4n+8)-(5n+6)
And then simplify

Answer 3

Remember to distribute the negative

Answer 4

hint:
if I call with \(x\) the length of the third side, then we can write this:
\(x+(5n+6)+(4n+5)=17n+11\)