Add 90/80 and 15/28
1st number: 1 10/80, 2nd number: 15/28
90/80 + 15/28 is 93/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 28 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
90/80 = 90 × 7/80 × 7 = 630/560 - Likewise, for the 2nd fraction, since 28 × 20 = 560,
15/28 = 15 × 20/28 × 20 = 300/560 - Add the two like fractions:
630/560 + 300/560 = 630 + 300/560 = 930/560 - 930/560 simplified gives 93/56
- So, 90/80 + 15/28 = 93/56
In mixed form: 137/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/80+30/28 90/80+15/56 90/80+45/28 90/80+15/84 90/80+75/28