Add 90/60 and 10/80
1st number: 1 30/60, 2nd number: 10/80
90/60 + 10/80 is 13/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 60 × 4 = 240,
90/60 = 90 × 4/60 × 4 = 360/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
10/80 = 10 × 3/80 × 3 = 30/240 - Add the two like fractions:
360/240 + 30/240 = 360 + 30/240 = 390/240 - 390/240 simplified gives 13/8
- So, 90/60 + 10/80 = 13/8
In mixed form: 15/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/60+20/80 90/60+30/80 90/60+50/80 90/60+70/80