Add 90/12 and 7/40
1st number: 7 6/12, 2nd number: 7/40
90/12 + 7/40 is 307/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 12 × 10 = 120,
90/12 = 90 × 10/12 × 10 = 900/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
7/40 = 7 × 3/40 × 3 = 21/120 - Add the two like fractions:
900/120 + 21/120 = 900 + 21/120 = 921/120 - 921/120 simplified gives 307/40
- So, 90/12 + 7/40 = 307/40
In mixed form: 727/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/12+14/40 90/24+7/40 90/12+7/80 90/12+21/40 90/36+7/40 90/12+35/40 90/60+7/40 90/12+49/40 90/84+7/40