a certain number added to 18 gives the same result as that obtained when twice the number is subracted from 42. find the number

Question

a certain number added to 18 gives the same result as that obtained when twice the number is subracted from 42. find the number

Answer 1

Let n = the number

Let 2n = twice the number

 

18 + n = 42 - 2n

 

3n = 24

 

n = 8

 

A²