Add 63/27 and 20/70
1st number: 2 9/27, 2nd number: 20/70
63/27 + 20/70 is 55/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 70 is 1890
Next, find the equivalent fraction of both fractional numbers with denominator 1890 - For the 1st fraction, since 27 × 70 = 1890,
63/27 = 63 × 70/27 × 70 = 4410/1890 - Likewise, for the 2nd fraction, since 70 × 27 = 1890,
20/70 = 20 × 27/70 × 27 = 540/1890 - Add the two like fractions:
4410/1890 + 540/1890 = 4410 + 540/1890 = 4950/1890 - 4950/1890 simplified gives 55/21
- So, 63/27 + 20/70 = 55/21
In mixed form: 213/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/27+40/70 63/54+20/70 63/27+60/70 63/81+20/70