Add 42/20 and 90/4
1st number: 2 2/20, 2nd number: 22 2/4
42/20 + 90/4 is 123/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 4 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 20 × 1 = 20,
42/20 = 42 × 1/20 × 1 = 42/20 - Likewise, for the 2nd fraction, since 4 × 5 = 20,
90/4 = 90 × 5/4 × 5 = 450/20 - Add the two like fractions:
42/20 + 450/20 = 42 + 450/20 = 492/20 - 492/20 simplified gives 123/5
- So, 42/20 + 90/4 = 123/5
In mixed form: 243/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/20+90/4 42/40+90/4 42/20+90/8 42/60+90/4 42/20+90/12 42/20+90/20 42/20+90/28