Subtract 63/14 from 4/45, Solve 4/45

Subtract 63/14 from 4/45

1^st number: 4/45, 2^nd number: 4 7/14

4/45 - 63/14 is -397/90.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 14 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 45 × 14 = 630,
4/45 = 4 × 14/45 × 14 = 56/630
Likewise, for the 2nd fraction, since 14 × 45 = 630,
63/14 = 63 × 45/14 × 45 = 2835/630
Subtract the two like fractions:
56/630 - 2835/630 = 56 - 2835/630 = -2779/630
After reducing the fraction, the answer is -397/90

MathStep (Works offline)

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