Subtract 20/70 from 18/98
18/98 - 20/70 is -5/49.
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,
18/98 = 18 × 5/98 × 5 = 90/490 - Likewise, for the 2nd fraction, since 70 × 7 = 490,
20/70 = 20 × 7/70 × 7 = 140/490 - Subtract the two like fractions:
90/490 - 140/490 = 90 - 140/490 = -50/490 - After reducing the fraction, the answer is -5/49
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