Add 90/40 and 1/12
1st number: 2 10/40, 2nd number: 1/12
90/40 + 1/12 is 7/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 12 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
90/40 = 90 × 3/40 × 3 = 270/120 - Likewise, for the 2nd fraction, since 12 × 10 = 120,
1/12 = 1 × 10/12 × 10 = 10/120 - Add the two like fractions:
270/120 + 10/120 = 270 + 10/120 = 280/120 - 280/120 simplified gives 7/3
- So, 90/40 + 1/12 = 7/3
In mixed form: 21/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/40+2/12 90/80+1/12 90/40+1/24 90/40+3/12 90/40+1/36 90/40+5/12 90/40+1/60 90/40+7/12 90/40+1/84