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

Subtract 30/4 from 4/63

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

4/63 - 30/4 is -937/126.

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,
4/63 = 4 × 4/63 × 4 = 16/252
Likewise, for the 2nd fraction, since 4 × 63 = 252,
30/4 = 30 × 63/4 × 63 = 1890/252
Subtract the two like fractions:
16/252 - 1890/252 = 16 - 1890/252 = -1874/252
After reducing the fraction, the answer is -937/126

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