Subtract 45/70 from 25/98
25/98 - 45/70 is -19/49.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 70 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 98 × 5 = 490,
25/98 = 25 × 5/98 × 5 = 125/490 - Likewise, for the 2nd fraction, since 70 × 7 = 490,
45/70 = 45 × 7/70 × 7 = 315/490 - Subtract the two like fractions:
125/490 - 315/490 = 125 - 315/490 = -190/490 - After reducing the fraction, the answer is -19/49
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