Subtract 42/49 from 21/4
1st number: 5 1/4, 2nd number: 42/49
21/4 - 42/49 is 123/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 49 is 196
Next, find the equivalent fraction of both fractional numbers with denominator 196 - For the 1st fraction, since 4 × 49 = 196,
21/4 = 21 × 49/4 × 49 = 1029/196 - Likewise, for the 2nd fraction, since 49 × 4 = 196,
42/49 = 42 × 4/49 × 4 = 168/196 - Subtract the two like fractions:
1029/196 - 168/196 = 1029 - 168/196 = 861/196 - After reducing the fraction, the answer is 123/28
- In mixed form: 411/28
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