Subtract 30/63 from 90/8, Solve 11 2/8

Subtract 30/63 from 90/8

1^st number: 11 2/8, 2^nd number: 30/63

90/8 - 30/63 is 905/84.

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,
90/8 = 90 × 63/8 × 63 = 5670/504
Likewise, for the 2nd fraction, since 63 × 8 = 504,
30/63 = 30 × 8/63 × 8 = 240/504
Subtract the two like fractions:
5670/504 - 240/504 = 5670 - 240/504 = 5430/504
After reducing the fraction, the answer is 905/84
In mixed form: 1065/84

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