:( i took 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?

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.

Also we know that, for example  112 can be written as 11*10+2

so we can write

Hence the original number is 52.

step-by-step explanation:

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