Respuesta :

n in 5n + 5 = 45 is 8 because you'd subtract 5 from 45 and get 40, then divide 40 by  5 and get 8. 
Get the variable on one side and the numbers on the opposite.

5n + 5 = 45

Subtract 5 from each side of the equation.

5n = 40

And divide both sides by 5.

n = 8

So, n will equal to 8.