Subtract 56/98 from 20/70
20/70 - 56/98 is -2/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 98 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 70 × 7 = 490,
20/70 = 20 × 7/70 × 7 = 140/490 - Likewise, for the 2nd fraction, since 98 × 5 = 490,
56/98 = 56 × 5/98 × 5 = 280/490 - Subtract the two like fractions:
140/490 - 280/490 = 140 - 280/490 = -140/490 - After reducing the fraction, the answer is -2/7
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