Subtract 72/21 from 24/30
1st number: 24/30, 2nd number: 3 9/21
24/30 - 72/21 is -92/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
24/30 = 24 × 7/30 × 7 = 168/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
72/21 = 72 × 10/21 × 10 = 720/210 - Subtract the two like fractions:
168/210 - 720/210 = 168 - 720/210 = -552/210 - After reducing the fraction, the answer is -92/35
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