I keep coming up with the same solution for this problem which differs from the book.

3x + 3/2(2x - 1)= 2

I continue to get 7/15 and the book says it's 7/12. I know this may appear simple but it has me stumped.

First I multiplied by the reciprocal, then I tried distributing. I keep coming up with the same answer but it doesn't check.

What am I doing wrong?