Subtract 18/9 from 72/98, Solve 72/98

Subtract 18/9 from 72/98

1^st number: 72/98, 2^nd number: 2 0/9

72/98 - 18/9 is -62/49.

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,
72/98 = 72 × 9/98 × 9 = 648/882
Likewise, for the 2nd fraction, since 9 × 98 = 882,
18/9 = 18 × 98/9 × 98 = 1764/882
Subtract the two like fractions:
648/882 - 1764/882 = 648 - 1764/882 = -1116/882
After reducing the fraction, the answer is -62/49

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