Subtract 81/30 from 2/7
1st number: 2/7, 2nd number: 2 21/30
2/7 - 81/30 is -169/70.
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,
2/7 = 2 × 30/7 × 30 = 60/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
81/30 = 81 × 7/30 × 7 = 567/210 - Subtract the two like fractions:
60/210 - 567/210 = 60 - 567/210 = -507/210 - After reducing the fraction, the answer is -169/70
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