Add 42/40 and 45/25
1st number: 1 2/40, 2nd number: 1 20/25
42/40 + 45/25 is 57/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 25 is 200
Next, find the equivalent fraction of both fractional numbers with denominator 200 - For the 1st fraction, since 40 × 5 = 200,
42/40 = 42 × 5/40 × 5 = 210/200 - Likewise, for the 2nd fraction, since 25 × 8 = 200,
45/25 = 45 × 8/25 × 8 = 360/200 - Add the two like fractions:
210/200 + 360/200 = 210 + 360/200 = 570/200 - 570/200 simplified gives 57/20
- So, 42/40 + 45/25 = 57/20
In mixed form: 217/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/40+45/25 42/40+90/25 42/80+45/25 42/40+45/50 42/40+45/75