Respuesta :

1. 3n - 5

Five less = -5

Than thrice (three times) a number = 3n

2. 7n + 3

The product of 7 and a number = 7n

Added to 3 = + 3

3. 1/2(3n - 4)

One-half = 1/2

The difference of thrice a number and 4 = 3n - 4

Hope this helps!! :)

Answer:

1. 5-x

2. (7*x)+x

3. 1/2(3x-4)