Answers

Subtract 48/84 from 21/30

21/30 - 48/84 is 9/70.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 84 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 30 × 14 = 420,
   21/30 = 21 × 14/30 × 14 = 294/420
3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
   48/84 = 48 × 5/84 × 5 = 240/420
4. Subtract the two like fractions:
   294/420 - 240/420 = 294 - 240/420 = 54/420
5. After reducing the fraction, the answer is 9/70

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