Add 42/40 and 54/84
1st number: 1 2/40, 2nd number: 54/84
42/40 + 54/84 is 237/140.
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,
42/40 = 42 × 21/40 × 21 = 882/840 - Likewise, for the 2nd fraction, since 84 × 10 = 840,
54/84 = 54 × 10/84 × 10 = 540/840 - Add the two like fractions:
882/840 + 540/840 = 882 + 540/840 = 1422/840 - 1422/840 simplified gives 237/140
- So, 42/40 + 54/84 = 237/140
In mixed form: 197/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/40+54/84 42/80+54/84