Answer:
x = 1
Explanation:
given the figure has one pair of parallel sides and the legs are congruent, then
LMNO is an isosceles trapezoid,
the diagonals of an isosceles trapezoid are congruent , so
LN = MO , that is
7x = 2x + 5 ( subtract 2x from both sides )
5x = 5 ( divide both sides by 5 )
x = 1