Add 36/84 and 18/21
36/84 + 18/21 is 9/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
36/84 = 36 × 1/84 × 1 = 36/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
18/21 = 18 × 4/21 × 4 = 72/84 - Add the two like fractions:
36/84 + 72/84 = 36 + 72/84 = 108/84 - 108/84 simplified gives 9/7
- So, 36/84 + 18/21 = 9/7
In mixed form: 12/7
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