Answer:
15
Step-by-step explanation:
First, we will solve the first equation to find the value of x:
Original Number - 8 = x Original Number = x + 8
Now, we will use the second equation to find the value of x:
x * 3 = 21 x = 21 / 3 x = 7
Finally, we will use the value of x (7) in the equation we found to find the original number:
Original Number = x + 8 Original Number = 7 + 8 Original Number = 15
So, the original number is 15.
