What is the improper fraction form of the mixed number acb?
QUESTION
What is the key step when subtracting mixed numbers if the top fraction is smaller than the bottom fraction?
QUESTION
What is the first step to add ba and dc when b=d?
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ANSWER
Rewrite both with a common denominator (often LCD(b,d)). To add fractions with unlike denominators, equivalent fractions must share a common denominator, ideally the least common one, before combining numerators.