Subtract 21/30 from 72/7
1st number: 10 2/7, 2nd number: 21/30
72/7 - 21/30 is 671/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 7 × 30 = 210,
72/7 = 72 × 30/7 × 30 = 2160/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
21/30 = 21 × 7/30 × 7 = 147/210 - Subtract the two like fractions:
2160/210 - 147/210 = 2160 - 147/210 = 2013/210 - After reducing the fraction, the answer is 671/70
- In mixed form: 941/70
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