Subtract 8/20 from 7/49
7/49 - 8/20 is -9/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 20 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 49 × 20 = 980,
7/49 = 7 × 20/49 × 20 = 140/980 - Likewise, for the 2nd fraction, since 20 × 49 = 980,
8/20 = 8 × 49/20 × 49 = 392/980 - Subtract the two like fractions:
140/980 - 392/980 = 140 - 392/980 = -252/980 - After reducing the fraction, the answer is -9/35
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