Subtract 3/70 from 28/54
28/54 - 3/70 is 899/1890.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 70 is 1890
Next, find the equivalent fraction of both fractional numbers with denominator 1890 - For the 1st fraction, since 54 × 35 = 1890,
28/54 = 28 × 35/54 × 35 = 980/1890 - Likewise, for the 2nd fraction, since 70 × 27 = 1890,
3/70 = 3 × 27/70 × 27 = 81/1890 - Subtract the two like fractions:
980/1890 - 81/1890 = 980 - 81/1890 = 899/1890
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/54-3/70 28/54-6/70 84/54-3/70 28/54-9/70 28/54-15/70 28/54-21/70