Subtract 30/70 from 7/54
7/54 - 30/70 is -113/378.
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,
7/54 = 7 × 35/54 × 35 = 245/1890 - Likewise, for the 2nd fraction, since 70 × 27 = 1890,
30/70 = 30 × 27/70 × 27 = 810/1890 - Subtract the two like fractions:
245/1890 - 810/1890 = 245 - 810/1890 = -565/1890 - After reducing the fraction, the answer is -113/378
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