Question

Need help
The lengths of the sides of a triangle are, in units, 2-x over 2x+6,,, and 2x over 2x+6 and 1 over 2x+6 . What is the perimeter of the triangle in simplest terms (in units)?
A. 1/2
B. 3+x over 2x+6
C.-1/2
D. 27+3x over 2x+6

Answer 1

the perimeter is the sum of all side lengths
you have all the sides just add them up

Answer 2

\(\Large P=\frac{2-x}{2x+6}+\frac{2x}{2x+6}+\frac{1}{2x+6}=
\frac{2-x+2x+1}{2x+6}=\frac{x+3}{2x+6}\)