Subtract 28/54 from 7/70
7/70 - 28/54 is -113/270.
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,
7/70 = 7 × 27/70 × 27 = 189/1890 - Likewise, for the 2nd fraction, since 54 × 35 = 1890,
28/54 = 28 × 35/54 × 35 = 980/1890 - Subtract the two like fractions:
189/1890 - 980/1890 = 189 - 980/1890 = -791/1890 - After reducing the fraction, the answer is -113/270
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