Subtract 8/63 from 90/27, Solve 3 9/27

Subtract 8/63 from 90/27

1^st number: 3 9/27, 2^nd number: 8/63

90/27 - 8/63 is 202/63.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 63 is 189

Next, find the equivalent fraction of both fractional numbers with denominator 189
For the 1st fraction, since 27 × 7 = 189,
90/27 = 90 × 7/27 × 7 = 630/189
Likewise, for the 2nd fraction, since 63 × 3 = 189,
8/63 = 8 × 3/63 × 3 = 24/189
Subtract the two like fractions:
630/189 - 24/189 = 630 - 24/189 = 606/189
After reducing the fraction, the answer is 202/63
In mixed form: 313/63

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