Subtract 21/84 from 72/35
1st number: 2 2/35, 2nd number: 21/84
72/35 - 21/84 is 253/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 35 × 12 = 420,
72/35 = 72 × 12/35 × 12 = 864/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
21/84 = 21 × 5/84 × 5 = 105/420 - Subtract the two like fractions:
864/420 - 105/420 = 864 - 105/420 = 759/420 - After reducing the fraction, the answer is 253/140
- In mixed form: 1113/140
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