Subtract 42/63 from 90/10, Solve 9 0/10

Subtract 42/63 from 90/10

1^st number: 9 0/10, 2^nd number: 42/63

90/10 - 42/63 is 25/3.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 63 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 10 × 63 = 630,
90/10 = 90 × 63/10 × 63 = 5670/630
Likewise, for the 2nd fraction, since 63 × 10 = 630,
42/63 = 42 × 10/63 × 10 = 420/630
Subtract the two like fractions:
5670/630 - 420/630 = 5670 - 420/630 = 5250/630
After reducing the fraction, the answer is 25/3
In mixed form: 81/3

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