Add 28/36 and 21/42
28/36 + 21/42 is 23/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 42 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
28/36 = 28 × 7/36 × 7 = 196/252 - Likewise, for the 2nd fraction, since 42 × 6 = 252,
21/42 = 21 × 6/42 × 6 = 126/252 - Add the two like fractions:
196/252 + 126/252 = 196 + 126/252 = 322/252 - 322/252 simplified gives 23/18
- So, 28/36 + 21/42 = 23/18
In mixed form: 15/18
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