Subtract 21/98 from 20/18, Solve 1 2/18

Subtract 21/98 from 20/18

1^st number: 1 2/18, 2^nd number: 21/98

20/18 - 21/98 is 113/126.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 98 is 882

Next, find the equivalent fraction of both fractional numbers with denominator 882
For the 1st fraction, since 18 × 49 = 882,
20/18 = 20 × 49/18 × 49 = 980/882
Likewise, for the 2nd fraction, since 98 × 9 = 882,
21/98 = 21 × 9/98 × 9 = 189/882
Subtract the two like fractions:
980/882 - 189/882 = 980 - 189/882 = 791/882
After reducing the fraction, the answer is 113/126

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