Subtract 90/98 from 42/50
42/50 - 90/98 is -96/1225.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 98 is 2450
Next, find the equivalent fraction of both fractional numbers with denominator 2450 - For the 1st fraction, since 50 × 49 = 2450,
42/50 = 42 × 49/50 × 49 = 2058/2450 - Likewise, for the 2nd fraction, since 98 × 25 = 2450,
90/98 = 90 × 25/98 × 25 = 2250/2450 - Subtract the two like fractions:
2058/2450 - 2250/2450 = 2058 - 2250/2450 = -192/2450 - After reducing the fraction, the answer is -96/1225
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Related: 84/50-90/98