Add 4/30 and 18/40
4/30 + 18/40 is 7/12.
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,
18/40 = 18 × 3/40 × 3 = 54/120 - Add the two like fractions:
16/120 + 54/120 = 16 + 54/120 = 70/120 - 70/120 simplified gives 7/12
- So, 4/30 + 18/40 = 7/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/30+18/40 4/30+36/40 4/60+18/40 4/30+18/80 12/30+18/40 4/30+54/40 4/90+18/40 20/30+18/40 4/30+90/40 28/30+18/40