Add 90/35 and 15/80
1st number: 2 20/35, 2nd number: 15/80
90/35 + 15/80 is 309/112.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 35 × 16 = 560,
90/35 = 90 × 16/35 × 16 = 1440/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
15/80 = 15 × 7/80 × 7 = 105/560 - Add the two like fractions:
1440/560 + 105/560 = 1440 + 105/560 = 1545/560 - 1545/560 simplified gives 309/112
- So, 90/35 + 15/80 = 309/112
In mixed form: 285/112
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/35+30/80 90/70+15/80 90/35+45/80 90/35+75/80