<PRE><B>Question 666738</B>
When 8 is added to certain number and the sum is multiplied by 3,the result is 57.find the number?


(8 + n)3 = 57

Divide each side by 3

(8 + n)3 / 3 = 57 / 3

8 + n = 19

Subtract 8 from each side of the equation.

8 + n - 8 = 19 - 8

Combine like terms:

8 - 8 = 0

19 - 8 = 11

n = 11


Check:

(8 + 11)3 = 57

8 + 11 = 19

19 * 3 = 57





Lennox Obuong
Algebra 2 Student
Email: obuong3@aol.com</PRE>