Add 21/30 and 84/18
1st number: 21/30, 2nd number: 4 12/18
21/30 + 84/18 is 161/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
21/30 = 21 × 3/30 × 3 = 63/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
84/18 = 84 × 5/18 × 5 = 420/90 - Add the two like fractions:
63/90 + 420/90 = 63 + 420/90 = 483/90 - 483/90 simplified gives 161/30
- So, 21/30 + 84/18 = 161/30
In mixed form: 511/30
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