Subtract 90/8 from 1/63, Solve 1/63

Subtract 90/8 from 1/63

1^st number: 1/63, 2^nd number: 11 2/8

1/63 - 90/8 is -2831/252.

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

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 63 × 8 = 504,
1/63 = 1 × 8/63 × 8 = 8/504
Likewise, for the 2nd fraction, since 8 × 63 = 504,
90/8 = 90 × 63/8 × 63 = 5670/504
Subtract the two like fractions:
8/504 - 5670/504 = 8 - 5670/504 = -5662/504
After reducing the fraction, the answer is -2831/252

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