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Question

The sum twice a number and 4 is 80 , find the number.


Solution

let the number = x 

and its given that The sum twice a number and 4 is 80  

this can be written mathematically as 

2x +4 = 80 

2x = 80-4 

2x = 76 

x= 76/2 

x= 38 

so the  number is 38

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