Subtract 1/90 from 84/56
1st number: 1 28/56, 2nd number: 1/90
84/56 - 1/90 is 67/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 90 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 56 × 45 = 2520,
84/56 = 84 × 45/56 × 45 = 3780/2520 - Likewise, for the 2nd fraction, since 90 × 28 = 2520,
1/90 = 1 × 28/90 × 28 = 28/2520 - Subtract the two like fractions:
3780/2520 - 28/2520 = 3780 - 28/2520 = 3752/2520 - After reducing the fraction, the answer is 67/45
- In mixed form: 122/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/56-2/90 84/56-3/90 84/56-5/90 84/56-7/90