Subtract 21/40 from 63/7
1st number: 9 0/7, 2nd number: 21/40
63/7 - 21/40 is 339/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 7 × 40 = 280,
63/7 = 63 × 40/7 × 40 = 2520/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
21/40 = 21 × 7/40 × 7 = 147/280 - Subtract the two like fractions:
2520/280 - 147/280 = 2520 - 147/280 = 2373/280 - After reducing the fraction, the answer is 339/40
- In mixed form: 819/40
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