Add 75/20 and 63/90
1st number: 3 15/20, 2nd number: 63/90
75/20 + 63/90 is 89/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
75/20 = 75 × 9/20 × 9 = 675/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
63/90 = 63 × 2/90 × 2 = 126/180 - Add the two like fractions:
675/180 + 126/180 = 675 + 126/180 = 801/180 - 801/180 simplified gives 89/20
- So, 75/20 + 63/90 = 89/20
In mixed form: 49/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/40+63/90 75/60+63/90