Add 4/40 and 18/30
4/40 + 18/30 is 7/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 30 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
4/40 = 4 × 3/40 × 3 = 12/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
18/30 = 18 × 4/30 × 4 = 72/120 - Add the two like fractions:
12/120 + 72/120 = 12 + 72/120 = 84/120 - 84/120 simplified gives 7/10
- So, 4/40 + 18/30 = 7/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/40+18/30 4/40+36/30 4/80+18/30 4/40+18/60 12/40+18/30 4/40+54/30 4/40+18/90 20/40+18/30 4/40+90/30 28/40+18/30