Add 7/90 and 7/40
7/90 + 7/40 is 91/360.
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,
7/40 = 7 × 9/40 × 9 = 63/360 - Add the two like fractions:
28/360 + 63/360 = 28 + 63/360 = 91/360 - So, 7/90 + 7/40 = 91/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/90+7/40 7/90+14/40 7/90+7/80 21/90+7/40 7/90+21/40 35/90+7/40 7/90+35/40 49/90+7/40 7/90+49/40