Respuesta :

Answer:

Step-by-step explanation:

Not sure what "given l m n " means...

If you want the value of x in (9x+18) = (2x+19)

then

    (9x + 18) = (2x + 19)

9x + 18 - 18 = 2x + 19 - 18

             9x = 2x + 1

      9x - 2x = 2x - 2x + 1

              7x = 1

           7x/7 = 1/7

               x = 1/7