Subtract 20/80 from 10/49
10/49 - 20/80 is -9/196.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 80 is 3920
Next, find the equivalent fraction of both fractional numbers with denominator 3920 - For the 1st fraction, since 49 × 80 = 3920,
10/49 = 10 × 80/49 × 80 = 800/3920 - Likewise, for the 2nd fraction, since 80 × 49 = 3920,
20/80 = 20 × 49/80 × 49 = 980/3920 - Subtract the two like fractions:
800/3920 - 980/3920 = 800 - 980/3920 = -180/3920 - After reducing the fraction, the answer is -9/196
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