Add 18/30 and 16/40
18/30 + 16/40 is 1/1.
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,
18/30 = 18 × 4/30 × 4 = 72/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
16/40 = 16 × 3/40 × 3 = 48/120 - Add the two like fractions:
72/120 + 48/120 = 72 + 48/120 = 120/120 - 120/120 simplified gives 1/1
- So, 18/30 + 16/40 = 1/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/30+16/40 18/30+32/40 18/60+16/40 18/30+16/80 54/30+16/40 18/30+48/40 18/90+16/40 90/30+16/40 18/30+80/40