



 
Kevin, I can help get you started. Here is Duwayne's work. First number
multiply by 3
add 18
divide by 8
The subject line of your email was "work backward" and that's the way I would solve this. In the last step he took the number in line 3, divided it by 8 and got the answer 9. What number was in line 3? Once you know this ask yourself, what number was in line 2? Continue. I hope this helps,  


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