Add 4/30 and 9/40
4/30 + 9/40 is 43/120.
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,
4/30 = 4 × 4/30 × 4 = 16/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
9/40 = 9 × 3/40 × 3 = 27/120 - Add the two like fractions:
16/120 + 27/120 = 16 + 27/120 = 43/120 - So, 4/30 + 9/40 = 43/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/30+9/40 4/30+18/40 4/60+9/40 4/30+9/80 12/30+9/40 4/30+27/40 4/90+9/40 20/30+9/40 4/30+45/40 28/30+9/40 4/30+63/40