Subtract 21/63 from 15/8, Solve 1 7/8

Subtract 21/63 from 15/8

1^st number: 1 7/8, 2^nd number: 21/63

15/8 - 21/63 is 37/24.

Find the least common denominator or LCM of the two denominators:
LCM of 8 and 63 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 8 × 63 = 504,
15/8 = 15 × 63/8 × 63 = 945/504
Likewise, for the 2nd fraction, since 63 × 8 = 504,
21/63 = 21 × 8/63 × 8 = 168/504
Subtract the two like fractions:
945/504 - 168/504 = 945 - 168/504 = 777/504
After reducing the fraction, the answer is 37/24
In mixed form: 113/24

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