Subtract 30/7 from 9/40
1st number: 9/40, 2nd number: 4 2/7
9/40 - 30/7 is -1137/280.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 7 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
9/40 = 9 × 7/40 × 7 = 63/280 - Likewise, for the 2nd fraction, since 7 × 40 = 280,
30/7 = 30 × 40/7 × 40 = 1200/280 - Subtract the two like fractions:
63/280 - 1200/280 = 63 - 1200/280 = -1137/280
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