Add 84/12 and 21/30
1st number: 7 0/12, 2nd number: 21/30
84/12 + 21/30 is 77/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
84/12 = 84 × 5/12 × 5 = 420/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
21/30 = 21 × 2/30 × 2 = 42/60 - Add the two like fractions:
420/60 + 42/60 = 420 + 42/60 = 462/60 - 462/60 simplified gives 77/10
- So, 84/12 + 21/30 = 77/10
In mixed form: 77/10
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