Subtract 28/35 from 4/45
4/45 - 28/35 is -32/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 35 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
4/45 = 4 × 7/45 × 7 = 28/315 - Likewise, for the 2nd fraction, since 35 × 9 = 315,
28/35 = 28 × 9/35 × 9 = 252/315 - Subtract the two like fractions:
28/315 - 252/315 = 28 - 252/315 = -224/315 - After reducing the fraction, the answer is -32/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/45-28/35 4/45-56/35 4/90-28/35 4/45-28/70 12/45-28/35 4/45-84/35 20/45-28/35 28/45-28/35