Question

The sum of 12 and the product of 9 and a number results in 57

Answer 1

If i read this correctly then the answer would be 
57-12= 45
45/9= 5

The answer is 5

Answer 2

Ok, first we write it as an equation.
12+ 9n = 57.
Then, subtract 12 from each side.
12 - 12 + 9n = 57 - 12.
9n = 45.
Then, divide each side by 9.
n = 45 divided by 9.
n = 5.
Hope it helps! :)