Add 8/28 and 90/45
1st number: 8/28, 2nd number: 2 0/45
8/28 + 90/45 is 16/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 45 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
8/28 = 8 × 45/28 × 45 = 360/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
90/45 = 90 × 28/45 × 28 = 2520/1260 - Add the two like fractions:
360/1260 + 2520/1260 = 360 + 2520/1260 = 2880/1260 - 2880/1260 simplified gives 16/7
- So, 8/28 + 90/45 = 16/7
In mixed form: 22/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/28+90/45 8/56+90/45 24/28+90/45 8/84+90/45 40/28+90/45 56/28+90/45