Subtract 28/8 from 72/98, Solve 72/98

Subtract 28/8 from 72/98

1^st number: 72/98, 2^nd number: 3 4/8

72/98 - 28/8 is -271/98.

Find the least common denominator or LCM of the two denominators:
LCM of 98 and 8 is 392

Next, find the equivalent fraction of both fractional numbers with denominator 392
For the 1st fraction, since 98 × 4 = 392,
72/98 = 72 × 4/98 × 4 = 288/392
Likewise, for the 2nd fraction, since 8 × 49 = 392,
28/8 = 28 × 49/8 × 49 = 1372/392
Subtract the two like fractions:
288/392 - 1372/392 = 288 - 1372/392 = -1084/392
After reducing the fraction, the answer is -271/98

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