Add 9/20 and 28/49
9/20 + 28/49 is 143/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 49 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 20 × 49 = 980,
9/20 = 9 × 49/20 × 49 = 441/980 - Likewise, for the 2nd fraction, since 49 × 20 = 980,
28/49 = 28 × 20/49 × 20 = 560/980 - Add the two like fractions:
441/980 + 560/980 = 441 + 560/980 = 1001/980 - 1001/980 simplified gives 143/140
- So, 9/20 + 28/49 = 143/140
In mixed form: 13/140
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