Add 7/40 and 98/90
1st number: 7/40, 2nd number: 1 8/90
7/40 + 98/90 is 91/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
7/40 = 7 × 9/40 × 9 = 63/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
98/90 = 98 × 4/90 × 4 = 392/360 - Add the two like fractions:
63/360 + 392/360 = 63 + 392/360 = 455/360 - 455/360 simplified gives 91/72
- So, 7/40 + 98/90 = 91/72
In mixed form: 119/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/40+98/90 7/80+98/90 21/40+98/90 35/40+98/90 49/40+98/90