Subtract 28/30 from 4/63, Solve 4/63

Subtract 28/30 from 4/63

4/63 - 28/30 is -274/315.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 30 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 63 × 10 = 630,
4/63 = 4 × 10/63 × 10 = 40/630
Likewise, for the 2nd fraction, since 30 × 21 = 630,
28/30 = 28 × 21/30 × 21 = 588/630
Subtract the two like fractions:
40/630 - 588/630 = 40 - 588/630 = -548/630
After reducing the fraction, the answer is -274/315

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