Subtract 84/28 from 72/30
1st number: 2 12/30, 2nd number: 3 0/28
72/30 - 84/28 is -3/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 30 × 14 = 420,
72/30 = 72 × 14/30 × 14 = 1008/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
84/28 = 84 × 15/28 × 15 = 1260/420 - Subtract the two like fractions:
1008/420 - 1260/420 = 1008 - 1260/420 = -252/420 - After reducing the fraction, the answer is -3/5
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