Add 84/70 and 54/60
1st number: 1 14/70, 2nd number: 54/60
84/70 + 54/60 is 21/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
84/70 = 84 × 6/70 × 6 = 504/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
54/60 = 54 × 7/60 × 7 = 378/420 - Add the two like fractions:
504/420 + 378/420 = 504 + 378/420 = 882/420 - 882/420 simplified gives 21/10
- So, 84/70 + 54/60 = 21/10
In mixed form: 21/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: