Frequent Questions about our Solver

The problem

Click to see the original problem

Can you explain the step 3rd step where the - is in front of the problem

Answer provided by our tutors

The minus comes from the multiplication with "(-2)", it is pulled in front.

You can obtain an explanation for any step by clicking on it. Please note that you cannot click on the very first expression, which is the original problem. Quite often, several transformations will be performed within the same step. Use the explanation navigation buttons to step through all of them:

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