CAN SOMEONE HELP?

Find the value of x?

x = 1

Step-by-step explanation:

Δ ABC and Δ DEF are congruent ( SAS postulate )

Thus corresponding sides are congruent that is

BC = EF , substitute values

13x - 12 = 7x - 6 ( subtract 7x from both sides )

6x - 12 = - 6 ( add 12 to both sides )

6x = 6 ( divide both sides by 6 )

x = 1

if the angular bisector of an triangle bisects the opposite side, prove that the other two sides are equal.