Add 84/72 and 21/36
1st number: 1 12/72, 2nd number: 21/36
84/72 + 21/36 is 7/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 36 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
84/72 = 84 × 1/72 × 1 = 84/72 - Likewise, for the 2nd fraction, since 36 × 2 = 72,
21/36 = 21 × 2/36 × 2 = 42/72 - Add the two like fractions:
84/72 + 42/72 = 84 + 42/72 = 126/72 - 126/72 simplified gives 7/4
- So, 84/72 + 21/36 = 7/4
In mixed form: 13/4
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