Add 7/90 and 63/40
1st number: 7/90, 2nd number: 1 23/40
7/90 + 63/40 is 119/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
7/90 = 7 × 4/90 × 4 = 28/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
63/40 = 63 × 9/40 × 9 = 567/360 - Add the two like fractions:
28/360 + 567/360 = 28 + 567/360 = 595/360 - 595/360 simplified gives 119/72
- So, 7/90 + 63/40 = 119/72
In mixed form: 147/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/90+63/40 7/90+63/80 21/90+63/40 35/90+63/40 49/90+63/40