Question 20713
In order to solve this problem, you first need to combine like terms on each side of the equal sign.  This will change your equation to {{{3b=7b}}}.  Then, you need to move all the b's over to one side of the equal sign.  I am going to move 7b to the left side by subtracting 7b from both sides of the equation:  {{{-4b=0}}}.  Then, you divide by -4 to get {{{b=0}}}.