Add 24/28 and 70/90
24/28 + 70/90 is 103/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 90 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
24/28 = 24 × 45/28 × 45 = 1080/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
70/90 = 70 × 14/90 × 14 = 980/1260 - Add the two like fractions:
1080/1260 + 980/1260 = 1080 + 980/1260 = 2060/1260 - 2060/1260 simplified gives 103/63
- So, 24/28 + 70/90 = 103/63
In mixed form: 140/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/28+70/90 24/56+70/90 72/28+70/90 24/84+70/90