Add 27/84 and 42/40
1st number: 27/84, 2nd number: 1 2/40
27/84 + 42/40 is 48/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 84 × 10 = 840,
27/84 = 27 × 10/84 × 10 = 270/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
42/40 = 42 × 21/40 × 21 = 882/840 - Add the two like fractions:
270/840 + 882/840 = 270 + 882/840 = 1152/840 - 1152/840 simplified gives 48/35
- So, 27/84 + 42/40 = 48/35
In mixed form: 113/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/84+42/40 27/84+84/40 27/84+42/80 81/84+42/40