Respuesta :

3x – y = 18
3x – 27 = 18
3x= 45
  x =15
accamacho
3x-y=18, substitute y=27 then you get 3x-27=18., add 27 to each side to get x by itself, 3x=45, then divide by 3 and you get x=15

Otras preguntas