Subtract 18/9 from 30/35
1st number: 30/35, 2nd number: 2 0/9
30/35 - 18/9 is -8/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 9 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 35 × 9 = 315,
30/35 = 30 × 9/35 × 9 = 270/315 - Likewise, for the 2nd fraction, since 9 × 35 = 315,
18/9 = 18 × 35/9 × 35 = 630/315 - Subtract the two like fractions:
270/315 - 630/315 = 270 - 630/315 = -360/315 - After reducing the fraction, the answer is -8/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/35-18/9 30/35-36/9 30/70-18/9 90/35-18/9 30/35-54/9 30/35-18/27 30/35-90/9 30/35-18/45 30/35-18/63