Subtract 49/10 from 15/63, Solve 15/63

Subtract 49/10 from 15/63

1^st number: 15/63, 2^nd number: 4 9/10

15/63 - 49/10 is -979/210.

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

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 63 × 10 = 630,
15/63 = 15 × 10/63 × 10 = 150/630
Likewise, for the 2nd fraction, since 10 × 63 = 630,
49/10 = 49 × 63/10 × 63 = 3087/630
Subtract the two like fractions:
150/630 - 3087/630 = 150 - 3087/630 = -2937/630
After reducing the fraction, the answer is -979/210

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