Add 7/20 and 7/49
7/20 + 7/49 is 69/140.
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,
7/20 = 7 × 49/20 × 49 = 343/980 - Likewise, for the 2nd fraction, since 49 × 20 = 980,
7/49 = 7 × 20/49 × 20 = 140/980 - Add the two like fractions:
343/980 + 140/980 = 343 + 140/980 = 483/980 - 483/980 simplified gives 69/140
- So, 7/20 + 7/49 = 69/140
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