(PLEASE HELP ME FAST! ) What missing number
makes the following equation true for any value of n?
2(5n - []= 4(3n – 5) - 2n

A. 20

B. 10

C. 5

D. 2

Given: ae ≅ ce ; de ≅ be prove: abcd is a parallelogram. we have that ab || dc. by a similar argument used to prove that △aeb ≅ △ced, we can show that △ ≅ △ceb by. so, ∠cad ≅ ∠ by cpctc. therefore, ad || bc by the converse of the theorem. since both pair of opposite sides are parallel, quadrilateral abcd is a parallelogram.