Add 12/28 and 90/24
1st number: 12/28, 2nd number: 3 18/24
12/28 + 90/24 is 117/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 24 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 28 × 6 = 168,
12/28 = 12 × 6/28 × 6 = 72/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
90/24 = 90 × 7/24 × 7 = 630/168 - Add the two like fractions:
72/168 + 630/168 = 72 + 630/168 = 702/168 - 702/168 simplified gives 117/28
- So, 12/28 + 90/24 = 117/28
In mixed form: 45/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/28+90/24 12/56+90/24 12/28+90/48 36/28+90/24 12/84+90/24 12/28+90/72 60/28+90/24 84/28+90/24