Add 45/54 and 72/7
1st number: 45/54, 2nd number: 10 2/7
45/54 + 72/7 is 467/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 7 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
45/54 = 45 × 7/54 × 7 = 315/378 - Likewise, for the 2nd fraction, since 7 × 54 = 378,
72/7 = 72 × 54/7 × 54 = 3888/378 - Add the two like fractions:
315/378 + 3888/378 = 315 + 3888/378 = 4203/378 - 4203/378 simplified gives 467/42
- So, 45/54 + 72/7 = 467/42
In mixed form: 115/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/54+72/7 45/54+72/14 45/54+72/21 45/54+72/35 45/54+72/49