Frequent Questions about our Solver

The problem

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my homework said the answer to this problem is -20, This site and my own calculations keep arriving at -24. Any insight?

Answer provided by our tutors

The calculation of our site and you have the correct answer. 

The homework answer may be wrong or maybe there is a typo in the expression.

However, - 20 is the solution for the following expression that differs from the original by one digit.

Click here to see the calculation.

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