Subtract 20/70 from 3/49
3/49 - 20/70 is -11/49.
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,
3/49 = 3 × 10/49 × 10 = 30/490 - Likewise, for the 2nd fraction, since 70 × 7 = 490,
20/70 = 20 × 7/70 × 7 = 140/490 - Subtract the two like fractions:
30/490 - 140/490 = 30 - 140/490 = -110/490 - After reducing the fraction, the answer is -11/49
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