Subtract 15/9 from 20/98, Solve 20/98

Subtract 15/9 from 20/98

1^st number: 20/98, 2^nd number: 1 6/9

20/98 - 15/9 is -215/147.

Find the least common denominator or LCM of the two denominators:
LCM of 98 and 9 is 882

Next, find the equivalent fraction of both fractional numbers with denominator 882
For the 1st fraction, since 98 × 9 = 882,
20/98 = 20 × 9/98 × 9 = 180/882
Likewise, for the 2nd fraction, since 9 × 98 = 882,
15/9 = 15 × 98/9 × 98 = 1470/882
Subtract the two like fractions:
180/882 - 1470/882 = 180 - 1470/882 = -1290/882
After reducing the fraction, the answer is -215/147

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