Subtract 42/63 from 12/10, Solve 1 2/10

Subtract 42/63 from 12/10

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

12/10 - 42/63 is 8/15.

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,
12/10 = 12 × 63/10 × 63 = 756/630
Likewise, for the 2nd fraction, since 63 × 10 = 630,
42/63 = 42 × 10/63 × 10 = 420/630
Subtract the two like fractions:
756/630 - 420/630 = 756 - 420/630 = 336/630
After reducing the fraction, the answer is 8/15

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