Subtract 48/84 from 90/30
1st number: 3 0/30, 2nd number: 48/84
90/30 - 48/84 is 17/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 30 × 14 = 420,
90/30 = 90 × 14/30 × 14 = 1260/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
48/84 = 48 × 5/84 × 5 = 240/420 - Subtract the two like fractions:
1260/420 - 240/420 = 1260 - 240/420 = 1020/420 - After reducing the fraction, the answer is 17/7
- In mixed form: 23/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/30-96/84 90/60-48/84