Answer:
0
Step-by-step explanation:
7 is tens place: 70,71,72,73,74,75,76,77,78,79
7 in ones place: 7,17,27,37,47,57,67,77,87,97
10-10=0
Answer:
0
Step-by-step explanation:
7 is tens place: 70,71,72,73,74,75,76,77,78,79
7 in ones place: 7,17,27,37,47,57,67,77,87,97
10-10=0