Subtract 81/60 from 4/98, Solve 4/98

Subtract 81/60 from 4/98

1^st number: 4/98, 2^nd number: 1 21/60

4/98 - 81/60 is -1283/980.

Find the least common denominator or LCM of the two denominators:
LCM of 98 and 60 is 2940

Next, find the equivalent fraction of both fractional numbers with denominator 2940
For the 1st fraction, since 98 × 30 = 2940,
4/98 = 4 × 30/98 × 30 = 120/2940
Likewise, for the 2nd fraction, since 60 × 49 = 2940,
81/60 = 81 × 49/60 × 49 = 3969/2940
Subtract the two like fractions:
120/2940 - 3969/2940 = 120 - 3969/2940 = -3849/2940
After reducing the fraction, the answer is -1283/980

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