Question

the sum of the two digit is 9 . if the digit in the unit place of thr twp digit be x , what is the number​

Answer 1

Answer:

The unit’s place digit is = x Sum of two digits = 9

Then, Ten’s digit = 9 – x

So, The number = 10 (9 – x) + x = 90 – 10x + x = 90 – 9x

Step-by-step explanation:

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