X+4b=72. If x=12, what’s the value of b?

So replace x as 12 now you rewrite the problem as 12+4b=72

Now you would have to move the constant towards the right side within it’s sign

4b=72-12

Now you subtract 72 by 12 which would give you 60

4b=60

Then you divide 4 by both sides

Therefore the answer is going to be b=15

b=15

To check do 12+4(15)=72

And that’s accurate