Subtract 84/4 from 1/63, Solve 1/63

Subtract 84/4 from 1/63

1^st number: 1/63, 2^nd number: 21 0/4

1/63 - 84/4 is -1322/63.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 4 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 63 × 4 = 252,
1/63 = 1 × 4/63 × 4 = 4/252
Likewise, for the 2nd fraction, since 4 × 63 = 252,
84/4 = 84 × 63/4 × 63 = 5292/252
Subtract the two like fractions:
4/252 - 5292/252 = 4 - 5292/252 = -5288/252
After reducing the fraction, the answer is -1322/63

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