Answer:
17x - 11y + 14 cm
Explanation:
In order to find the perimeter of a triangle, we simply add up the lengths of all three sides.
Perimeter = side 1 + side 2 + side 3
In this case:
Given:
- Side 1 = 8x + 4 cm
- Side 2 = 9x - 4y cm
- Side 3 = 10 - 7y cm
Solution:
Perimeter = 8x + 4 + 9x - 4y + 10 - 7y
Simplify like terms:
= 17x - 11y + 14
Therefore, the perimeter of the triangle is 17x - 11y + 14 cm.