Question

check the divisibility inverse of - 13​

Answer 1

Answer:

Subtract the last two digits from four times the rest. The result must be divisible by 13.  

Subtract 9 times the last digit from the rest. The result must be divisible by 13. 637: 63 - 7 × 9 = 0.

Step-by-step explanation:

637: 63 - 7 × 9 = 0.