Subtract 50/84 from 70/40
1st number: 1 30/40, 2nd number: 50/84
70/40 - 50/84 is 97/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 84 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 40 × 21 = 840,
70/40 = 70 × 21/40 × 21 = 1470/840 - Likewise, for the 2nd fraction, since 84 × 10 = 840,
50/84 = 50 × 10/84 × 10 = 500/840 - Subtract the two like fractions:
1470/840 - 500/840 = 1470 - 500/840 = 970/840 - After reducing the fraction, the answer is 97/84
- In mixed form: 113/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/80-50/84