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Finding three consecutive negative numbers

I am thinking of three consecutive negative numbers. If I multiply the first with the second and then subtract three times the third, the result is 57. What are the numbers? I need to know the correct algebra equation as well to get the numbers. Thanks.

Solution Preview

Let the smallest number be x, then its consecutive numbers are x + 1 and x = 2
The equation is ...

Solution Summary

It shows how to set up and solve the equation to find three consecutive negative numbers.