Add 60/21 and 70/54
1st number: 2 18/21, 2nd number: 1 16/54
60/21 + 70/54 is 785/189.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 21 × 18 = 378,
60/21 = 60 × 18/21 × 18 = 1080/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
70/54 = 70 × 7/54 × 7 = 490/378 - Add the two like fractions:
1080/378 + 490/378 = 1080 + 490/378 = 1570/378 - 1570/378 simplified gives 785/189
- So, 60/21 + 70/54 = 785/189
In mixed form: 429/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/42+70/54 60/63+70/54