Subtract 8/54 from 4/70
4/70 - 8/54 is -86/945.
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,
4/70 = 4 × 27/70 × 27 = 108/1890 - Likewise, for the 2nd fraction, since 54 × 35 = 1890,
8/54 = 8 × 35/54 × 35 = 280/1890 - Subtract the two like fractions:
108/1890 - 280/1890 = 108 - 280/1890 = -172/1890 - After reducing the fraction, the answer is -86/945
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