Subtract 63/14 from 2/90, Solve 2/90

Subtract 63/14 from 2/90

1^st number: 2/90, 2^nd number: 4 7/14

2/90 - 63/14 is -403/90.

Find the least common denominator or LCM of the two denominators:
LCM of 90 and 14 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 90 × 7 = 630,
2/90 = 2 × 7/90 × 7 = 14/630
Likewise, for the 2nd fraction, since 14 × 45 = 630,
63/14 = 63 × 45/14 × 45 = 2835/630
Subtract the two like fractions:
14/630 - 2835/630 = 14 - 2835/630 = -2821/630
After reducing the fraction, the answer is -403/90

MathStep (Works offline)

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