Subtract 25/3 from 40/70
1st number: 40/70, 2nd number: 8 1/3
40/70 - 25/3 is -163/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 3 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
40/70 = 40 × 3/70 × 3 = 120/210 - Likewise, for the 2nd fraction, since 3 × 70 = 210,
25/3 = 25 × 70/3 × 70 = 1750/210 - Subtract the two like fractions:
120/210 - 1750/210 = 120 - 1750/210 = -1630/210 - After reducing the fraction, the answer is -163/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/70-25/3 40/70-50/3 40/70-25/6 40/70-75/3 40/70-25/9 40/70-25/15 40/70-25/21