Subtract 20/18 from 2/63, Solve 2/63

Subtract 20/18 from 2/63

1^st number: 2/63, 2^nd number: 1 2/18

2/63 - 20/18 is -68/63.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 18 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 63 × 2 = 126,
2/63 = 2 × 2/63 × 2 = 4/126
Likewise, for the 2nd fraction, since 18 × 7 = 126,
20/18 = 20 × 7/18 × 7 = 140/126
Subtract the two like fractions:
4/126 - 140/126 = 4 - 140/126 = -136/126
After reducing the fraction, the answer is -68/63

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