Add 90/70 and 3/54
1st number: 1 20/70, 2nd number: 3/54
90/70 + 3/54 is 169/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 54 is 1890
Next, find the equivalent fraction of both fractional numbers with denominator 1890 - For the 1st fraction, since 70 × 27 = 1890,
90/70 = 90 × 27/70 × 27 = 2430/1890 - Likewise, for the 2nd fraction, since 54 × 35 = 1890,
3/54 = 3 × 35/54 × 35 = 105/1890 - Add the two like fractions:
2430/1890 + 105/1890 = 2430 + 105/1890 = 2535/1890 - 2535/1890 simplified gives 169/126
- So, 90/70 + 3/54 = 169/126
In mixed form: 143/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/70+6/54 90/70+9/54 90/70+15/54 90/70+21/54