Add 28/30 and 5/40
28/30 + 5/40 is 127/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
28/30 = 28 × 4/30 × 4 = 112/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
5/40 = 5 × 3/40 × 3 = 15/120 - Add the two like fractions:
112/120 + 15/120 = 112 + 15/120 = 127/120 - So, 28/30 + 5/40 = 127/120
In mixed form: 17/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/30+5/40 28/30+10/40 28/60+5/40 28/30+5/80 84/30+5/40 28/30+15/40 28/90+5/40 28/30+25/40 28/30+35/40