Subtract 12/8 from 28/63, Solve 28/63

Subtract 12/8 from 28/63

1^st number: 28/63, 2^nd number: 1 4/8

28/63 - 12/8 is -19/18.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 8 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 63 × 8 = 504,
28/63 = 28 × 8/63 × 8 = 224/504
Likewise, for the 2nd fraction, since 8 × 63 = 504,
12/8 = 12 × 63/8 × 63 = 756/504
Subtract the two like fractions:
224/504 - 756/504 = 224 - 756/504 = -532/504
After reducing the fraction, the answer is -19/18

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