Question 950365
n=a number;
3(n+3)=7n-15
3n+9=7n-15 Subtract 3n from each side.
9=4n-15 Add 15 to each side.
24=4n Divide each side by 4.
6=n ANSWER: The number is 6
CHECK
3(n+3)=7n-15
3(6+3)=7(6)-15
3(9)=42-15
27=27