Subtract 28/90 from 84/7
1st number: 12 0/7, 2nd number: 28/90
84/7 - 28/90 is 526/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 7 × 90 = 630,
84/7 = 84 × 90/7 × 90 = 7560/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
28/90 = 28 × 7/90 × 7 = 196/630 - Subtract the two like fractions:
7560/630 - 196/630 = 7560 - 196/630 = 7364/630 - After reducing the fraction, the answer is 526/45
- In mixed form: 1131/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/7-56/90 84/14-28/90 84/7-84/90 84/21-28/90 84/35-28/90 84/49-28/90