Add 42/80 and 25/54
42/80 + 25/54 is 1067/1080.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 54 is 2160
Next, find the equivalent fraction of both fractional numbers with denominator 2160 - For the 1st fraction, since 80 × 27 = 2160,
42/80 = 42 × 27/80 × 27 = 1134/2160 - Likewise, for the 2nd fraction, since 54 × 40 = 2160,
25/54 = 25 × 40/54 × 40 = 1000/2160 - Add the two like fractions:
1134/2160 + 1000/2160 = 1134 + 1000/2160 = 2134/2160 - 2134/2160 simplified gives 1067/1080
- So, 42/80 + 25/54 = 1067/1080
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/80+25/54 42/80+50/54 42/80+75/54