Subtract 84/70 from 45/50
1st number: 45/50, 2nd number: 1 14/70
45/50 - 84/70 is -3/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 70 is 350
Next, find the equivalent fraction of both fractional numbers with denominator 350 - For the 1st fraction, since 50 × 7 = 350,
45/50 = 45 × 7/50 × 7 = 315/350 - Likewise, for the 2nd fraction, since 70 × 5 = 350,
84/70 = 84 × 5/70 × 5 = 420/350 - Subtract the two like fractions:
315/350 - 420/350 = 315 - 420/350 = -105/350 - After reducing the fraction, the answer is -3/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/50-84/70