A triangle has side lengths of left bracket, 8, f, plus, g, right bracket(8f+g) centimeters, left bracket, 4, f, minus, 5, h, right bracket(4f−5h) centimeters, and left bracket, 9, h, plus, 7, g, right bracket(9h+7g) centimeters. Which expression represents the perimeter, in centimeters, of the triangle?

1 answer

The perimeter of a triangle is the sum of the lengths of its three sides.
Therefore, the expression that represents the perimeter of the triangle is:

(8f + g) + (4f - 5h) + (9h + 7g)