Add 20/70 and 36/54
20/70 + 36/54 is 20/21.
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,
20/70 = 20 × 27/70 × 27 = 540/1890 - Likewise, for the 2nd fraction, since 54 × 35 = 1890,
36/54 = 36 × 35/54 × 35 = 1260/1890 - Add the two like fractions:
540/1890 + 1260/1890 = 540 + 1260/1890 = 1800/1890 - 1800/1890 simplified gives 20/21
- So, 20/70 + 36/54 = 20/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/70+36/54 20/70+72/54 60/70+36/54