Add 54/72 and 60/70
54/72 + 60/70 is 45/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 70 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 72 × 35 = 2520,
54/72 = 54 × 35/72 × 35 = 1890/2520 - Likewise, for the 2nd fraction, since 70 × 36 = 2520,
60/70 = 60 × 36/70 × 36 = 2160/2520 - Add the two like fractions:
1890/2520 + 2160/2520 = 1890 + 2160/2520 = 4050/2520 - 4050/2520 simplified gives 45/28
- So, 54/72 + 60/70 = 45/28
In mixed form: 117/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: