Add 20/4 and 12/7
1st number: 5 0/4, 2nd number: 1 5/7
20/4 + 12/7 is 47/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 7 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 4 × 7 = 28,
20/4 = 20 × 7/4 × 7 = 140/28 - Likewise, for the 2nd fraction, since 7 × 4 = 28,
12/7 = 12 × 4/7 × 4 = 48/28 - Add the two like fractions:
140/28 + 48/28 = 140 + 48/28 = 188/28 - 188/28 simplified gives 47/7
- So, 20/4 + 12/7 = 47/7
In mixed form: 65/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/4+12/7 20/4+24/7 20/8+12/7 20/4+12/14 60/4+12/7 20/4+36/7 20/12+12/7 20/4+12/21 20/4+60/7 20/4+12/35 20/4+84/7 20/28+12/7 20/4+12/49