Add 4/20 and 63/90
4/20 + 63/90 is 9/10.
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,
4/20 = 4 × 9/20 × 9 = 36/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
63/90 = 63 × 2/90 × 2 = 126/180 - Add the two like fractions:
36/180 + 126/180 = 36 + 126/180 = 162/180 - 162/180 simplified gives 9/10
- So, 4/20 + 63/90 = 9/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/20+63/90 4/40+63/90 12/20+63/90 4/60+63/90 28/20+63/90