Add 30/84 and 27/42
30/84 + 27/42 is 1/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
30/84 = 30 × 1/84 × 1 = 30/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
27/42 = 27 × 2/42 × 2 = 54/84 - Add the two like fractions:
30/84 + 54/84 = 30 + 54/84 = 84/84 - 84/84 simplified gives 1/1
- So, 30/84 + 27/42 = 1/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/84+27/42 30/84+54/42 30/84+27/84 90/84+27/42 30/84+81/42