This week in math we learned how to add and subtract fractions with variables. For adding and subtracting, you first need to find a common denominator within the fractions. This will allow you to subtract or add the numerators to obtain an answer. To find a common denominator, you multiply all the numbers on the bottom and whatever you multiply on the bottom, you also do to the top. Here is an example:
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My biggest mistake this week was not being careful with the negatives and positives leading to the wrong answer.