Subtract 30/4 from 25/63, Solve 25/63

Subtract 30/4 from 25/63

1^st number: 25/63, 2^nd number: 7 2/4

25/63 - 30/4 is -895/126.

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,
25/63 = 25 × 4/63 × 4 = 100/252
Likewise, for the 2nd fraction, since 4 × 63 = 252,
30/4 = 30 × 63/4 × 63 = 1890/252
Subtract the two like fractions:
100/252 - 1890/252 = 100 - 1890/252 = -1790/252
After reducing the fraction, the answer is -895/126

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