Add 45/60 and 25/80
45/60 + 25/80 is 17/16.
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,
45/60 = 45 × 4/60 × 4 = 180/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
25/80 = 25 × 3/80 × 3 = 75/240 - Add the two like fractions:
180/240 + 75/240 = 180 + 75/240 = 255/240 - 255/240 simplified gives 17/16
- So, 45/60 + 25/80 = 17/16
In mixed form: 11/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/60+25/80 45/60+50/80 45/60+75/80