Add 3/30 and 28/40
3/30 + 28/40 is 4/5.
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,
3/30 = 3 × 4/30 × 4 = 12/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
28/40 = 28 × 3/40 × 3 = 84/120 - Add the two like fractions:
12/120 + 84/120 = 12 + 84/120 = 96/120 - 96/120 simplified gives 4/5
- So, 3/30 + 28/40 = 4/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/30+28/40 3/30+56/40 3/60+28/40 3/30+28/80 9/30+28/40 3/30+84/40 3/90+28/40 15/30+28/40 21/30+28/40