Subtract 90/10 from 84/28
1st number: 3 0/28, 2nd number: 9 0/10
84/28 - 90/10 is -6/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 10 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
84/28 = 84 × 5/28 × 5 = 420/140 - Likewise, for the 2nd fraction, since 10 × 14 = 140,
90/10 = 90 × 14/10 × 14 = 1260/140 - Subtract the two like fractions:
420/140 - 1260/140 = 420 - 1260/140 = -840/140 - After reducing the fraction, the answer is -6/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/56-90/10 84/28-90/20 84/28-90/30 84/28-90/50 84/28-90/70