Add 75/80 and 25/40
75/80 + 25/40 is 25/16.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 40 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
75/80 = 75 × 1/80 × 1 = 75/80 - Likewise, for the 2nd fraction, since 40 × 2 = 80,
25/40 = 25 × 2/40 × 2 = 50/80 - Add the two like fractions:
75/80 + 50/80 = 75 + 50/80 = 125/80 - 125/80 simplified gives 25/16
- So, 75/80 + 25/40 = 25/16
In mixed form: 19/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/80+50/40 75/80+25/80 75/80+75/40