Subtract 27/70 from 18/49
18/49 - 27/70 is -9/490.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 70 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 49 × 10 = 490,
18/49 = 18 × 10/49 × 10 = 180/490 - Likewise, for the 2nd fraction, since 70 × 7 = 490,
27/70 = 27 × 7/70 × 7 = 189/490 - Subtract the two like fractions:
180/490 - 189/490 = 180 - 189/490 = -9/490
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