Add 20/28 and 36/49
20/28 + 36/49 is 71/49.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 49 is 196
Next, find the equivalent fraction of both fractional numbers with denominator 196 - For the 1st fraction, since 28 × 7 = 196,
20/28 = 20 × 7/28 × 7 = 140/196 - Likewise, for the 2nd fraction, since 49 × 4 = 196,
36/49 = 36 × 4/49 × 4 = 144/196 - Add the two like fractions:
140/196 + 144/196 = 140 + 144/196 = 284/196 - 284/196 simplified gives 71/49
- So, 20/28 + 36/49 = 71/49
In mixed form: 122/49
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/28+36/49 20/28+72/49 20/56+36/49 20/28+36/98 60/28+36/49 20/84+36/49