Subtract 30/63 from 6/20, Solve 6/20

Subtract 30/63 from 6/20

6/20 - 30/63 is -37/210.

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,
6/20 = 6 × 63/20 × 63 = 378/1260
Likewise, for the 2nd fraction, since 63 × 20 = 1260,
30/63 = 30 × 20/63 × 20 = 600/1260
Subtract the two like fractions:
378/1260 - 600/1260 = 378 - 600/1260 = -222/1260
After reducing the fraction, the answer is -37/210

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