The question is 3 + 6(x) = 15 so you need to find x so you should add -3 on both sides of the equation and you will have: 6(x) = 15 -3 6(x) = 12 now you can divide both sides by 6 and you will have: x = 12/6 x = 2 :))) I hope this is helpful have a nice day
