Answer:
x = 9
Step-by-step explanation:
Corresponding sides of similar triangles are proportional.
FL/NL = EL/ML
(2x -5)/78 = 12/72 . . . . . . fill in given values
2x -5 = 78(12/72) = 13 . . . multiply by 78
2x = 18 . . . . add 5
x = 9 . . . . . . divide by 2
