Subtract 7/30 from 30/21
1st number: 1 9/21, 2nd number: 7/30
30/21 - 7/30 is 251/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
30/21 = 30 × 10/21 × 10 = 300/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
7/30 = 7 × 7/30 × 7 = 49/210 - Subtract the two like fractions:
300/210 - 49/210 = 300 - 49/210 = 251/210 - In mixed form: 141/210
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