Add 84/4 and 18/21
1st number: 21 0/4, 2nd number: 18/21
84/4 + 18/21 is 153/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
84/4 = 84 × 21/4 × 21 = 1764/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
18/21 = 18 × 4/21 × 4 = 72/84 - Add the two like fractions:
1764/84 + 72/84 = 1764 + 72/84 = 1836/84 - 1836/84 simplified gives 153/7
- So, 84/4 + 18/21 = 153/7
In mixed form: 216/7
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