The sum of a and B is 18.7. After the decimal point of a is moved one place to the right, it is exactly equal to B. how much is a. why 18.7 (10 plus 1)

The sum of a and B is 18.7. After the decimal point of a is moved one place to the right, it is exactly equal to B. how much is a. why 18.7 (10 plus 1)

Because the number B is 1 times, the number a is 10 times, the total is 11 times, the number a = 18.7 △ 11 × 10 = 17