Subtract 70/80 from 28/98
28/98 - 70/80 is -33/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 80 is 3920
Next, find the equivalent fraction of both fractional numbers with denominator 3920 - For the 1st fraction, since 98 × 40 = 3920,
28/98 = 28 × 40/98 × 40 = 1120/3920 - Likewise, for the 2nd fraction, since 80 × 49 = 3920,
70/80 = 70 × 49/80 × 49 = 3430/3920 - Subtract the two like fractions:
1120/3920 - 3430/3920 = 1120 - 3430/3920 = -2310/3920 - After reducing the fraction, the answer is -33/56
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