Question

The longest side of a triangle is "a" cm.
The second side is "b" cm shorter than the first side.
The third side is half as long as the second side.
Write an expression, in it's simplest form, for the perimeter of the triangle.​

Answer 1

1st side = a cm

2nd side = (a-b) cm

3rd side = (a-b)/2

perimeter a +(a-b) + {(a-b) /}