Subtract 12/27 from 20/70
20/70 - 12/27 is -10/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 27 is 1890
Next, find the equivalent fraction of both fractional numbers with denominator 1890 - For the 1st fraction, since 70 × 27 = 1890,
20/70 = 20 × 27/70 × 27 = 540/1890 - Likewise, for the 2nd fraction, since 27 × 70 = 1890,
12/27 = 12 × 70/27 × 70 = 840/1890 - Subtract the two like fractions:
540/1890 - 840/1890 = 540 - 840/1890 = -300/1890 - After reducing the fraction, the answer is -10/63
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