Subtract 6/90 from 72/63, Solve 1 9/63

Subtract 6/90 from 72/63

1^st number: 1 9/63, 2^nd number: 6/90

72/63 - 6/90 is 113/105.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 90 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 63 × 10 = 630,
72/63 = 72 × 10/63 × 10 = 720/630
Likewise, for the 2nd fraction, since 90 × 7 = 630,
6/90 = 6 × 7/90 × 7 = 42/630
Subtract the two like fractions:
720/630 - 42/630 = 720 - 42/630 = 678/630
After reducing the fraction, the answer is 113/105
In mixed form: 18/105

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