Subtract 70/49 from 70/80
1st number: 70/80, 2nd number: 1 21/49
70/80 - 70/49 is -31/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 49 is 3920
Next, find the equivalent fraction of both fractional numbers with denominator 3920 - For the 1st fraction, since 80 × 49 = 3920,
70/80 = 70 × 49/80 × 49 = 3430/3920 - Likewise, for the 2nd fraction, since 49 × 80 = 3920,
70/49 = 70 × 80/49 × 80 = 5600/3920 - Subtract the two like fractions:
3430/3920 - 5600/3920 = 3430 - 5600/3920 = -2170/3920 - After reducing the fraction, the answer is -31/56
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