Add 42/20 and 90/24
1st number: 2 2/20, 2nd number: 3 18/24
42/20 + 90/24 is 117/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 24 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 20 × 6 = 120,
42/20 = 42 × 6/20 × 6 = 252/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
90/24 = 90 × 5/24 × 5 = 450/120 - Add the two like fractions:
252/120 + 450/120 = 252 + 450/120 = 702/120 - 702/120 simplified gives 117/20
- So, 42/20 + 90/24 = 117/20
In mixed form: 517/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/20+90/24 42/40+90/24 42/20+90/48 42/60+90/24 42/20+90/72