Add 30/80 and 18/35
30/80 + 18/35 is 249/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 35 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
30/80 = 30 × 7/80 × 7 = 210/560 - Likewise, for the 2nd fraction, since 35 × 16 = 560,
18/35 = 18 × 16/35 × 16 = 288/560 - Add the two like fractions:
210/560 + 288/560 = 210 + 288/560 = 498/560 - 498/560 simplified gives 249/280
- So, 30/80 + 18/35 = 249/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/80+18/35 30/80+36/35 30/80+18/70 90/80+18/35 30/80+54/35 30/80+90/35