Respuesta :
First you need to add 21 to both sides. Then you'll have 14x = 70
Then divide both sides by 14 to get x by itself. The 14's cancel out and, by dividing 70/14 you get x = 5
Then divide both sides by 14 to get x by itself. The 14's cancel out and, by dividing 70/14 you get x = 5