Subtract 10/30 from 84/45
1st number: 1 39/45, 2nd number: 10/30
84/45 - 10/30 is 23/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
84/45 = 84 × 2/45 × 2 = 168/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
10/30 = 10 × 3/30 × 3 = 30/90 - Subtract the two like fractions:
168/90 - 30/90 = 168 - 30/90 = 138/90 - After reducing the fraction, the answer is 23/15
- In mixed form: 18/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/45-20/30 84/90-10/30 84/45-10/60 84/45-10/90 84/45-50/30 84/45-70/30