Answers

Subtract 70/54 from 84/63

1^st number: 1 21/63, 2^nd number: 1 16/54

84/63 - 70/54 is 1/27.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 54 is 378
   
   Next, find the equivalent fraction of both fractional numbers with denominator 378
2. For the 1st fraction, since 63 × 6 = 378,
   84/63 = 84 × 6/63 × 6 = 504/378
3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
   70/54 = 70 × 7/54 × 7 = 490/378
4. Subtract the two like fractions:
   504/378 - 490/378 = 504 - 490/378 = 14/378
5. After reducing the fraction, the answer is 1/27

MathStep (Works offline)

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

Related:

Subtract Fractions Calculator