Subtract 98/63 from 15/72, Solve 15/72

Subtract 98/63 from 15/72

1^st number: 15/72, 2^nd number: 1 35/63

15/72 - 98/63 is -97/72.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 63 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 72 × 7 = 504,
15/72 = 15 × 7/72 × 7 = 105/504
Likewise, for the 2nd fraction, since 63 × 8 = 504,
98/63 = 98 × 8/63 × 8 = 784/504
Subtract the two like fractions:
105/504 - 784/504 = 105 - 784/504 = -679/504
After reducing the fraction, the answer is -97/72

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