Add 90/12 and 25/40
1st number: 7 6/12, 2nd number: 25/40
90/12 + 25/40 is 65/8.
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,
25/40 = 25 × 3/40 × 3 = 75/120 - Add the two like fractions:
900/120 + 75/120 = 900 + 75/120 = 975/120 - 975/120 simplified gives 65/8
- So, 90/12 + 25/40 = 65/8
In mixed form: 81/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/12+50/40 90/24+25/40 90/12+25/80 90/12+75/40 90/36+25/40 90/60+25/40 90/84+25/40