Add 42/20 and 45/48
1st number: 2 2/20, 2nd number: 45/48
42/20 + 45/48 is 243/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 48 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 20 × 12 = 240,
42/20 = 42 × 12/20 × 12 = 504/240 - Likewise, for the 2nd fraction, since 48 × 5 = 240,
45/48 = 45 × 5/48 × 5 = 225/240 - Add the two like fractions:
504/240 + 225/240 = 504 + 225/240 = 729/240 - 729/240 simplified gives 243/80
- So, 42/20 + 45/48 = 243/80
In mixed form: 33/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/20+45/48 42/20+90/48 42/40+45/48 42/20+45/96 42/60+45/48