Respuesta :

boatengalbert291
Value of x

For an isosceles triangle two sides are equal
AB=BC
7x-3=9x-11.
11-3=9x-7x
8=2x
2x=8
x=8/2
x=4

AB =7x-3=7(4)-3=25 units

BC=9x-11=9(4)-11=25 units

AC=4x+1=4(4)+1=17 units