The expression on the left side of an equation is shown below. 3(x+1)+9=_
If the equation has no solution, which expression can be written in the box on the other side of the equation?
O 3(x+4)
O 2(x+6)+X
O 4(x-3) - x
O 3(x+1)+ 9x

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.