The problem
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how did (-7/12)+3/8 turned into (2(-7)+3(3))/2^2(3)?
What are the steps? How did we simplify this?
Answer provided by our tutors
Make sure that you click on options | show lots of steps and then click on the step itself, to see the explanation:
the first thing that happens is that original denominator are factored and then the least common denominator is found. Once you have the LCD, then the above formula is applied