Subtract 28/7 from 7/30
1st number: 7/30, 2nd number: 4 0/7
7/30 - 28/7 is -113/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 7 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
7/30 = 7 × 7/30 × 7 = 49/210 - Likewise, for the 2nd fraction, since 7 × 30 = 210,
28/7 = 28 × 30/7 × 30 = 840/210 - Subtract the two like fractions:
49/210 - 840/210 = 49 - 840/210 = -791/210 - After reducing the fraction, the answer is -113/30
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