Add 84/12 and 5/40
1st number: 7 0/12, 2nd number: 5/40
84/12 + 5/40 is 57/8.
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,
84/12 = 84 × 10/12 × 10 = 840/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
5/40 = 5 × 3/40 × 3 = 15/120 - Add the two like fractions:
840/120 + 15/120 = 840 + 15/120 = 855/120 - 855/120 simplified gives 57/8
- So, 84/12 + 5/40 = 57/8
In mixed form: 71/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/12+10/40 84/24+5/40 84/12+5/80 84/12+15/40 84/36+5/40 84/12+25/40 84/60+5/40 84/12+35/40