Add 3/30 and 5/40
3/30 + 5/40 is 9/40.
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,
5/40 = 5 × 3/40 × 3 = 15/120 - Add the two like fractions:
12/120 + 15/120 = 12 + 15/120 = 27/120 - 27/120 simplified gives 9/40
- So, 3/30 + 5/40 = 9/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/30+5/40 3/30+10/40 3/60+5/40 3/30+5/80 9/30+5/40 3/30+15/40 3/90+5/40 15/30+5/40 3/30+25/40 21/30+5/40 3/30+35/40