Respuesta :

I wont give you an answer but i will explain what this means. It is EASY.

EX: 3x + 4 = 12   4x+3=14 You add the two x's because you cant ad a number to an number that has an  letter beside it. So you will have
7x+7=26. That easy 
Not fully simplified- 2x-18x +14y-1
                               2x-18x+14y-9