Subtract 30/28 from 7/40
1st number: 7/40, 2nd number: 1 2/28
7/40 - 30/28 is -251/280.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 28 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
7/40 = 7 × 7/40 × 7 = 49/280 - Likewise, for the 2nd fraction, since 28 × 10 = 280,
30/28 = 30 × 10/28 × 10 = 300/280 - Subtract the two like fractions:
49/280 - 300/280 = 49 - 300/280 = -251/280
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