Again, your applying the multiplication to only one term of the sum.

Let the number be x. So 3 more than the number is x + 3, then we miltiply that by 2 and the result is 14.

So 2(x + 3) = 14 .............expand the brackets to get:

=> 2x + 6 = 14 ...............now we subtract 6 from both sides to get:

=> 2x = 14 - 6 = 8 ..........now we divide both sides by 2 to get:

=> x = 4