Subtract 6/63 from 10/20, Solve 10/20

Subtract 6/63 from 10/20

10/20 - 6/63 is 17/42.

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,
10/20 = 10 × 63/20 × 63 = 630/1260
Likewise, for the 2nd fraction, since 63 × 20 = 1260,
6/63 = 6 × 20/63 × 20 = 120/1260
Subtract the two like fractions:
630/1260 - 120/1260 = 630 - 120/1260 = 510/1260
After reducing the fraction, the answer is 17/42

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