Add 75/54 and 90/70
1st number: 1 21/54, 2nd number: 1 20/70
75/54 + 90/70 is 337/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 70 is 1890
Next, find the equivalent fraction of both fractional numbers with denominator 1890 - For the 1st fraction, since 54 × 35 = 1890,
75/54 = 75 × 35/54 × 35 = 2625/1890 - Likewise, for the 2nd fraction, since 70 × 27 = 1890,
90/70 = 90 × 27/70 × 27 = 2430/1890 - Add the two like fractions:
2625/1890 + 2430/1890 = 2625 + 2430/1890 = 5055/1890 - 5055/1890 simplified gives 337/126
- So, 75/54 + 90/70 = 337/126
In mixed form: 285/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: