Add 42/70 and 84/54
1st number: 42/70, 2nd number: 1 30/54
42/70 + 84/54 is 97/45.
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,
42/70 = 42 × 27/70 × 27 = 1134/1890 - Likewise, for the 2nd fraction, since 54 × 35 = 1890,
84/54 = 84 × 35/54 × 35 = 2940/1890 - Add the two like fractions:
1134/1890 + 2940/1890 = 1134 + 2940/1890 = 4074/1890 - 4074/1890 simplified gives 97/45
- So, 42/70 + 84/54 = 97/45
In mixed form: 27/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/70+84/54