Subtract 30/4 from 7/63, Solve 7/63

Subtract 30/4 from 7/63

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

7/63 - 30/4 is -133/18.

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,
7/63 = 7 × 4/63 × 4 = 28/252
Likewise, for the 2nd fraction, since 4 × 63 = 252,
30/4 = 30 × 63/4 × 63 = 1890/252
Subtract the two like fractions:
28/252 - 1890/252 = 28 - 1890/252 = -1862/252
After reducing the fraction, the answer is -133/18

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad