Subtract 80/50 from 9/70
1st number: 9/70, 2nd number: 1 30/50
9/70 - 80/50 is -103/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 50 is 350
Next, find the equivalent fraction of both fractional numbers with denominator 350 - For the 1st fraction, since 70 × 5 = 350,
9/70 = 9 × 5/70 × 5 = 45/350 - Likewise, for the 2nd fraction, since 50 × 7 = 350,
80/50 = 80 × 7/50 × 7 = 560/350 - Subtract the two like fractions:
45/350 - 560/350 = 45 - 560/350 = -515/350 - After reducing the fraction, the answer is -103/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/70-80/50 27/70-80/50 45/70-80/50 63/70-80/50