Subtract 10/4 from 81/98, Solve 81/98

Subtract 10/4 from 81/98

1^st number: 81/98, 2^nd number: 2 2/4

81/98 - 10/4 is -82/49.

Find the least common denominator or LCM of the two denominators:
LCM of 98 and 4 is 196

Next, find the equivalent fraction of both fractional numbers with denominator 196
For the 1st fraction, since 98 × 2 = 196,
81/98 = 81 × 2/98 × 2 = 162/196
Likewise, for the 2nd fraction, since 4 × 49 = 196,
10/4 = 10 × 49/4 × 49 = 490/196
Subtract the two like fractions:
162/196 - 490/196 = 162 - 490/196 = -328/196
After reducing the fraction, the answer is -82/49

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