Subtract 40/35 from 10/30
1st number: 10/30, 2nd number: 1 5/35
10/30 - 40/35 is -17/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 35 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
10/30 = 10 × 7/30 × 7 = 70/210 - Likewise, for the 2nd fraction, since 35 × 6 = 210,
40/35 = 40 × 6/35 × 6 = 240/210 - Subtract the two like fractions:
70/210 - 240/210 = 70 - 240/210 = -170/210 - After reducing the fraction, the answer is -17/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/30-40/35 10/30-80/35 10/60-40/35 10/30-40/70 10/90-40/35 50/30-40/35 70/30-40/35