Add 18/56 and 20/30
18/56 + 20/30 is 83/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 30 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 56 × 15 = 840,
18/56 = 18 × 15/56 × 15 = 270/840 - Likewise, for the 2nd fraction, since 30 × 28 = 840,
20/30 = 20 × 28/30 × 28 = 560/840 - Add the two like fractions:
270/840 + 560/840 = 270 + 560/840 = 830/840 - 830/840 simplified gives 83/84
- So, 18/56 + 20/30 = 83/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/56+20/30 18/56+40/30 18/56+20/60 54/56+20/30 18/56+60/30 18/56+20/90 90/56+20/30