Add 7/84 and 72/20
1st number: 7/84, 2nd number: 3 12/20
7/84 + 72/20 is 221/60.
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,
7/84 = 7 × 5/84 × 5 = 35/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
72/20 = 72 × 21/20 × 21 = 1512/420 - Add the two like fractions:
35/420 + 1512/420 = 35 + 1512/420 = 1547/420 - 1547/420 simplified gives 221/60
- So, 7/84 + 72/20 = 221/60
In mixed form: 341/60
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