Subtract 72/49 from 21/8
1st number: 2 5/8, 2nd number: 1 23/49
21/8 - 72/49 is 453/392.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 49 is 392
Next, find the equivalent fraction of both fractional numbers with denominator 392 - For the 1st fraction, since 8 × 49 = 392,
21/8 = 21 × 49/8 × 49 = 1029/392 - Likewise, for the 2nd fraction, since 49 × 8 = 392,
72/49 = 72 × 8/49 × 8 = 576/392 - Subtract the two like fractions:
1029/392 - 576/392 = 1029 - 576/392 = 453/392 - In mixed form: 161/392
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