Add 54/40 and 90/84
1st number: 1 14/40, 2nd number: 1 6/84
54/40 + 90/84 is 339/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 84 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 40 × 21 = 840,
54/40 = 54 × 21/40 × 21 = 1134/840 - Likewise, for the 2nd fraction, since 84 × 10 = 840,
90/84 = 90 × 10/84 × 10 = 900/840 - Add the two like fractions:
1134/840 + 900/840 = 1134 + 900/840 = 2034/840 - 2034/840 simplified gives 339/140
- So, 54/40 + 90/84 = 339/140
In mixed form: 259/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/80+90/84