Subtract 21/9 from 72/49
1st number: 1 23/49, 2nd number: 2 3/9
72/49 - 21/9 is -127/147.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 9 is 441
Next, find the equivalent fraction of both fractional numbers with denominator 441 - For the 1st fraction, since 49 × 9 = 441,
72/49 = 72 × 9/49 × 9 = 648/441 - Likewise, for the 2nd fraction, since 9 × 49 = 441,
21/9 = 21 × 49/9 × 49 = 1029/441 - Subtract the two like fractions:
648/441 - 1029/441 = 648 - 1029/441 = -381/441 - After reducing the fraction, the answer is -127/147
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