Add 18/56 and 30/70
18/56 + 30/70 is 3/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 70 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
18/56 = 18 × 5/56 × 5 = 90/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
30/70 = 30 × 4/70 × 4 = 120/280 - Add the two like fractions:
90/280 + 120/280 = 90 + 120/280 = 210/280 - 210/280 simplified gives 3/4
- So, 18/56 + 30/70 = 3/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/56+30/70 18/56+60/70 54/56+30/70 18/56+90/70 90/56+30/70