Subtract 12/20 from 7/49
7/49 - 12/20 is -16/35.
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,
12/20 = 12 × 49/20 × 49 = 588/980 - Subtract the two like fractions:
140/980 - 588/980 = 140 - 588/980 = -448/980 - After reducing the fraction, the answer is -16/35
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