Subtract 27/35 from 12/45
12/45 - 27/35 is -53/105.
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,
12/45 = 12 × 7/45 × 7 = 84/315 - Likewise, for the 2nd fraction, since 35 × 9 = 315,
27/35 = 27 × 9/35 × 9 = 243/315 - Subtract the two like fractions:
84/315 - 243/315 = 84 - 243/315 = -159/315 - After reducing the fraction, the answer is -53/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/45-27/35 12/45-54/35 12/90-27/35 12/45-27/70 36/45-27/35 12/45-81/35 60/45-27/35 84/45-27/35