Subtract 80/28 from 30/63, Solve 30/63

Subtract 80/28 from 30/63

1^st number: 30/63, 2^nd number: 2 24/28

30/63 - 80/28 is -50/21.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 28 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 63 × 4 = 252,
30/63 = 30 × 4/63 × 4 = 120/252
Likewise, for the 2nd fraction, since 28 × 9 = 252,
80/28 = 80 × 9/28 × 9 = 720/252
Subtract the two like fractions:
120/252 - 720/252 = 120 - 720/252 = -600/252
After reducing the fraction, the answer is -50/21

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