Subtract 21/15 from 98/63, Solve 1 35/63

Subtract 21/15 from 98/63

1^st number: 1 35/63, 2^nd number: 1 6/15

98/63 - 21/15 is 7/45.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 15 is 315

Next, find the equivalent fraction of both fractional numbers with denominator 315
For the 1st fraction, since 63 × 5 = 315,
98/63 = 98 × 5/63 × 5 = 490/315
Likewise, for the 2nd fraction, since 15 × 21 = 315,
21/15 = 21 × 21/15 × 21 = 441/315
Subtract the two like fractions:
490/315 - 441/315 = 490 - 441/315 = 49/315
After reducing the fraction, the answer is 7/45

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