Add 40/90 and 18/28
40/90 + 18/28 is 137/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 28 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 90 × 14 = 1260,
40/90 = 40 × 14/90 × 14 = 560/1260 - Likewise, for the 2nd fraction, since 28 × 45 = 1260,
18/28 = 18 × 45/28 × 45 = 810/1260 - Add the two like fractions:
560/1260 + 810/1260 = 560 + 810/1260 = 1370/1260 - 1370/1260 simplified gives 137/126
- So, 40/90 + 18/28 = 137/126
In mixed form: 111/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/90+18/28 40/90+36/28 40/90+18/56 40/90+54/28 40/90+18/84 40/90+90/28