Respuesta :

mathstudent55
Let x represent the number.
The sum of 3 and a number: x + 3
One-half the sum of 3 and a number: (x + 3)/2
5 is equal to one-half the sum of 3 and a number: 5 = (x + 3)/2
5=3x/ 1/2 the first slash means divided. So it would be five equals three x divided by 2