Question

kwasi thought of a number, multiplied it by7/2 and added 16 to the results.if the final answer was 30.what number did he think of​

Answer 1

4

Explanation:

1. represent the number he thought of with x

`(7)/(2) x + 16 = 30`

1. multiply through with the LCM which is 2
2. 
   `2 * (7)/(2)x + 16 * 2 = 30 * 2`
3. 
   `7x + 32 = 60`
4. 
   `7x = 60 - 32`
5. 
   `7x = 28`
6. 
   `(7x)/(7) = (28)/(7)`
7. 
   `x = 4`