Subtract 35/10 from 20/63, Solve 20/63

Subtract 35/10 from 20/63

1^st number: 20/63, 2^nd number: 3 5/10

20/63 - 35/10 is -401/126.

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,
20/63 = 20 × 10/63 × 10 = 200/630
Likewise, for the 2nd fraction, since 10 × 63 = 630,
35/10 = 35 × 63/10 × 63 = 2205/630
Subtract the two like fractions:
200/630 - 2205/630 = 200 - 2205/630 = -2005/630
After reducing the fraction, the answer is -401/126

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