Answer:
Jean would add both results to get the final result of the multiplication of 6 x 39.
Explanation:
6 x39 = 234
if the 3 in 39 is in the tenth position, then 6 x30 = 180
the number 9 in 39 stands as just 9, so, 6 x 9 = 54
The final multiplication of 6 and 39 = 180 + 54 = 234