Subtract 20/63 from 90/2, Solve 45 0/2

Subtract 20/63 from 90/2

1^st number: 45 0/2, 2^nd number: 20/63

90/2 - 20/63 is 2815/63.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 63 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 2 × 63 = 126,
90/2 = 90 × 63/2 × 63 = 5670/126
Likewise, for the 2nd fraction, since 63 × 2 = 126,
20/63 = 20 × 2/63 × 2 = 40/126
Subtract the two like fractions:
5670/126 - 40/126 = 5670 - 40/126 = 5630/126
After reducing the fraction, the answer is 2815/63
In mixed form: 4443/63

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