Me solve question 2 plzzz i need that is the only question plzzz

Look at this expression. a3b3c a-3b-3c-1 which of the following is the simplest form of the expression above?

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

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.