Add 90/4 and 72/28
1st number: 22 2/4, 2nd number: 2 16/28
90/4 + 72/28 is 351/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 28 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 4 × 7 = 28,
90/4 = 90 × 7/4 × 7 = 630/28 - Likewise, for the 2nd fraction, since 28 × 1 = 28,
72/28 = 72 × 1/28 × 1 = 72/28 - Add the two like fractions:
630/28 + 72/28 = 630 + 72/28 = 702/28 - 702/28 simplified gives 351/14
- So, 90/4 + 72/28 = 351/14
In mixed form: 251/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/8+72/28 90/4+72/56 90/12+72/28 90/4+72/84 90/20+72/28 90/28+72/28