SOLUTION: Pick a number and multiply it by 9. Add 15 to the product. Divided the sum by 3, end subtract 5. Do the given procedure with three different numbers and make a conjecture.

Question 1158644: Pick a number and multiply it by 9. Add 15 to the product. Divided the sum by 3, end subtract 5. Do the given procedure with three different numbers and make a conjecture.
Answer by math_helper(2461) (Show Source): You can put this solution on YOUR website!



n is the starting number



9n+15 = 15 added to the product of 9 and n



(9n+15)/3 =  3n+5 = above result divided by 3



3n+5 - 5 = 3n =  above result minus 5



Conclusion: the algorithm leaves you with three times the original number.





 

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