Thank you 1. If the sum of a and B is 18.7, and the decimal point of a moves to another place, which is exactly equal to B, then what are the two numbers?

The decimal point of number a moves one place to the right, which is exactly equal to number B, indicating that number B is 10 times of number a
What is the number a
18.7÷（10＋1）＝1.7
The second number is
1.7×10＝17

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