Add 21/36 and 18/28
21/36 + 18/28 is 103/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 28 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
21/36 = 21 × 7/36 × 7 = 147/252 - Likewise, for the 2nd fraction, since 28 × 9 = 252,
18/28 = 18 × 9/28 × 9 = 162/252 - Add the two like fractions:
147/252 + 162/252 = 147 + 162/252 = 309/252 - 309/252 simplified gives 103/84
- So, 21/36 + 18/28 = 103/84
In mixed form: 119/84
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