Itook a number, wrote a 9 to the right of it, and added the doubled original number to the result. the resulting sum is 633. what was the original number? pls : ')

Solution:

Let the original number be  x .

As per the problem I took a number, wrote a 9 to the right of it,

So we have  x9

Again  added the doubled original number to the result.

x9+2x

The resulting sum is 633. so we can write

Hence the original number is 52.

i believe the correct answer is option 4.principalities were small territories that were run by russian rulers.

which statement correctly defines principalities in northern asia in the 1200s? principalities were small territories that were run by russian rulers.

hope i could ! : )

the answer is 1030 it's very simple math.