Your question is invalid here but i am nice so i will answer it.
Well I'm sorry but the english counting ways go 1,2,3,4,5,6,7,8,9,10 and so on.
As you can see 9 is before 10.
After the number 9 and before the number 11.
The number line consists of integers that range from negative infinity to positive infinity. The next integer that comes after the number 9 is 10.
When a smaller numeral comes before a larger numeral it is subtracted. L = 50 X = 10 I = 1 → XLIX = (-10 + 50) + ( -1 + 10) = 40 + 9 = 49
21
IX because I is one and X is ten and when a smaller number comes before a larger number it means subtract from, in which case it is X - I or 10 - 1 which results in 9.IXIX
9/10
10
10 if you are counting whole numbers.
After the number 9 and before the number 11.
8 is the integer before 9, but a number is not necessarely an integer. You could say 8.9999999... comes before nine, or you could go further and say that any number that is less than nine is before nine, like -2.
10 10 comes after 9
The number line consists of integers that range from negative infinity to positive infinity. The next integer that comes after the number 9 is 10.
Eight would be the next number.
2539 is a number that comes after 2538 and before 2540.
7
21
When a smaller numeral comes before a larger numeral it is subtracted. L = 50 X = 10 I = 1 → XLIX = (-10 + 50) + ( -1 + 10) = 40 + 9 = 49