Question

if on adding 9 to twice of a whole number gives 31 thin the whole number is ______ ​

Answer 1

Answer:

13

Step-by-step explanation:

Let the whole number be "x"

9 is added twice the whole number . So=> 9 × 2x

By adding,

9+2x =31

2x =31-9

x = 22÷2

x = 11

Answer 2

Answer:

Let x be that whole number

2x+9=31

2x=22

x=11

The whole number is 11