Subtract 81/70 from 30/54
1st number: 30/54, 2nd number: 1 11/70
30/54 - 81/70 is -379/630.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 70 is 1890
Next, find the equivalent fraction of both fractional numbers with denominator 1890 - For the 1st fraction, since 54 × 35 = 1890,
30/54 = 30 × 35/54 × 35 = 1050/1890 - Likewise, for the 2nd fraction, since 70 × 27 = 1890,
81/70 = 81 × 27/70 × 27 = 2187/1890 - Subtract the two like fractions:
1050/1890 - 2187/1890 = 1050 - 2187/1890 = -1137/1890 - After reducing the fraction, the answer is -379/630
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