If 2b plus 3 equals 18 b equals?
2B + 3 = 18
B = 7.5
18 - 3 = 15
2 /15 = 7.5
If the answer is "18", you need to take the "3" away that you
have added. After taking the "3" away, it will be easier to figure
out what "B" equals. Now, because you have taken away the "3", you
are left with "2B". "2B", meaning "2 x B", just means you need to
do the opposite to figure out the answer, therefore being "2 / B".
Because you took the "3" and you had "15" left over, you will just
have to half that, therefore "B" equals "7.5".