Question

the perimeter of a triangle is 14a- 3b + 12c . if the two sides of the triangle are 4a +6b-8c and 3a- 5b +11c respectively , find the third side​

Answer 1

Answer:

The third side is 7a - 4b + 9c

Step-by-step explanation:

Let x be the missing side.

Perimeter of triangle = Sum of all sides.

Then,

14a - 3b + 12c = x + 4a + 6b - 8c + 3a -5b + 11c

14a - 3b + 12c = x + 7a + b + 3c

14a - 3b + 12c - 7a - b - 3c = x

7a - 4b + 9c = x

x = 7a - 4b + 9c