Add 18/40 and 25/30
18/40 + 25/30 is 77/60.
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,
18/40 = 18 × 3/40 × 3 = 54/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
25/30 = 25 × 4/30 × 4 = 100/120 - Add the two like fractions:
54/120 + 100/120 = 54 + 100/120 = 154/120 - 154/120 simplified gives 77/60
- So, 18/40 + 25/30 = 77/60
In mixed form: 117/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/40+25/30 18/40+50/30 18/80+25/30 18/40+25/60 54/40+25/30 18/40+75/30 18/40+25/90 90/40+25/30