Subtract 81/54 from 28/70
1st number: 28/70, 2nd number: 1 27/54
28/70 - 81/54 is -11/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 54 is 1890
Next, find the equivalent fraction of both fractional numbers with denominator 1890 - For the 1st fraction, since 70 × 27 = 1890,
28/70 = 28 × 27/70 × 27 = 756/1890 - Likewise, for the 2nd fraction, since 54 × 35 = 1890,
81/54 = 81 × 35/54 × 35 = 2835/1890 - Subtract the two like fractions:
756/1890 - 2835/1890 = 756 - 2835/1890 = -2079/1890 - After reducing the fraction, the answer is -11/10
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