Subtract 15/63 from 7/5, Solve 1 2/5

Subtract 15/63 from 7/5

1^st number: 1 2/5, 2^nd number: 15/63

7/5 - 15/63 is 122/105.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 63 is 315

Next, find the equivalent fraction of both fractional numbers with denominator 315
For the 1st fraction, since 5 × 63 = 315,
7/5 = 7 × 63/5 × 63 = 441/315
Likewise, for the 2nd fraction, since 63 × 5 = 315,
15/63 = 15 × 5/63 × 5 = 75/315
Subtract the two like fractions:
441/315 - 75/315 = 441 - 75/315 = 366/315
After reducing the fraction, the answer is 122/105
In mixed form: 117/105

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