Add 54/30 and 42/45
1st number: 1 24/30, 2nd number: 42/45
54/30 + 42/45 is 41/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
54/30 = 54 × 3/30 × 3 = 162/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
42/45 = 42 × 2/45 × 2 = 84/90 - Add the two like fractions:
162/90 + 84/90 = 162 + 84/90 = 246/90 - 246/90 simplified gives 41/15
- So, 54/30 + 42/45 = 41/15
In mixed form: 211/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/30+84/45 54/60+42/45 54/30+42/90 54/90+42/45