Add 72/84 and 49/20
1st number: 72/84, 2nd number: 2 9/20
72/84 + 49/20 is 463/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
72/84 = 72 × 5/84 × 5 = 360/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
49/20 = 49 × 21/20 × 21 = 1029/420 - Add the two like fractions:
360/420 + 1029/420 = 360 + 1029/420 = 1389/420 - 1389/420 simplified gives 463/140
- So, 72/84 + 49/20 = 463/140
In mixed form: 343/140
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