Add 54/42 and 25/40
1st number: 1 12/42, 2nd number: 25/40
54/42 + 25/40 is 107/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 42 × 20 = 840,
54/42 = 54 × 20/42 × 20 = 1080/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
25/40 = 25 × 21/40 × 21 = 525/840 - Add the two like fractions:
1080/840 + 525/840 = 1080 + 525/840 = 1605/840 - 1605/840 simplified gives 107/56
- So, 54/42 + 25/40 = 107/56
In mixed form: 151/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/42+50/40 54/84+25/40 54/42+25/80 54/42+75/40