HELP 10 POINTS RIGHT THAT SECOND?

Question

12 X 13 = B X 12

B = ?

Answer 1

12 X 13 = B X 12

12 X 13 = B X 12

156 =  B X 12

B = 156/12

B = 13

Number set obeys the commutative property. 12*13 = 13*12.

B = 13