Add 45/80 and 75/40
1st number: 45/80, 2nd number: 1 35/40
45/80 + 75/40 is 39/16.
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,
45/80 = 45 × 1/80 × 1 = 45/80 - Likewise, for the 2nd fraction, since 40 × 2 = 80,
75/40 = 75 × 2/40 × 2 = 150/80 - Add the two like fractions:
45/80 + 150/80 = 45 + 150/80 = 195/80 - 195/80 simplified gives 39/16
- So, 45/80 + 75/40 = 39/16
In mixed form: 27/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/80+75/40 45/80+75/80