Question

In the triangle shown, AB = 2x + 9 and BC = 5x – 12. Find the value of x.

Answer 1

x=7

Explanation:

AB=BC[ because two sides of isosceles triangles are equal ]

or, 2x+9=5x-12

or,9+12=5x-2x

or,21=3x

or,x= 21/3

therefore, x=3