Add 40/70 and 28/54
40/70 + 28/54 is 206/189.
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,
40/70 = 40 × 27/70 × 27 = 1080/1890 - Likewise, for the 2nd fraction, since 54 × 35 = 1890,
28/54 = 28 × 35/54 × 35 = 980/1890 - Add the two like fractions:
1080/1890 + 980/1890 = 1080 + 980/1890 = 2060/1890 - 2060/1890 simplified gives 206/189
- So, 40/70 + 28/54 = 206/189
In mixed form: 117/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/70+28/54 40/70+56/54 40/70+84/54