If a triangle has side 6 feet and 9 feet and perimeter is 23 feet , how long is the third side ?

The perimeter of a triangle is found by adding all the three sides.

Let's call the third side "x"

So,

6+9+x = 23

15+x = 23

x = 8

i am unable to solve this problem

step-by-step explanation:

so, converting firstly the mixed fractions to improper fractions and then "adding".