Subtract 15/63 from 30/20, Solve 1 10/20

Subtract 15/63 from 30/20

1^st number: 1 10/20, 2^nd number: 15/63

30/20 - 15/63 is 53/42.

Find the least common denominator or LCM of the two denominators:
LCM of 20 and 63 is 1260

Next, find the equivalent fraction of both fractional numbers with denominator 1260
For the 1st fraction, since 20 × 63 = 1260,
30/20 = 30 × 63/20 × 63 = 1890/1260
Likewise, for the 2nd fraction, since 63 × 20 = 1260,
15/63 = 15 × 20/63 × 20 = 300/1260
Subtract the two like fractions:
1890/1260 - 300/1260 = 1890 - 300/1260 = 1590/1260
After reducing the fraction, the answer is 53/42
In mixed form: 111/42

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