Here, no number is being subtracted so we can't add any number, but here 3 is being multiplied so we can divide both sides by 3

3b/3 = 12/3

b = 4

This is the right answer if you want to solve it.

Dear Anonymous,

What you would typically want to do in this type of problem is to solve for the unknown quantity, which in your equation is b.

And whatever you do to one side of the equation, you must also do to the other side. So, if you want to isolate b in the equation 3b = … Read more