Question

if on adding 9 to twice of a whole number gives 31,then the whole number is​

Answer 1

let the number be : x

given,

9+2x=31

》2x=22

》x=11✔

Answer 2

Answer:

let the whole no. be x

2x +9 = 31

2x = 31 -9

2x = 22

x = 11

whole no is 11

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