Subtract 21/35 from 7/54
7/54 - 21/35 is -127/270.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 35 is 1890
Next, find the equivalent fraction of both fractional numbers with denominator 1890 - For the 1st fraction, since 54 × 35 = 1890,
7/54 = 7 × 35/54 × 35 = 245/1890 - Likewise, for the 2nd fraction, since 35 × 54 = 1890,
21/35 = 21 × 54/35 × 54 = 1134/1890 - Subtract the two like fractions:
245/1890 - 1134/1890 = 245 - 1134/1890 = -889/1890 - After reducing the fraction, the answer is -127/270
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