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where is c multiplied by 3 coming from in the second line? why is c being divided and multiplied by 3?
Answer provided by our tutors
We are converting 'c' to fraction so that we can perfrom adding of fractions:
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, like in this case.