Question

on adding 9 to the twice of a whole number gives 31 the whole number is

Answer 1

I think 11 is that whole no.
hope it help
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Answer 2

Heya mate,
Here's your answer
=> let the no. be x,
9+2x=31
2x=31-9
2x=22
x=22/2
x=11

Therefore, the number Is 11.
Hope it helps you!!
Plz mark my answer as branliest ☺️