Add 21/42 and 3/36
21/42 + 3/36 is 7/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 42 × 6 = 252,
21/42 = 21 × 6/42 × 6 = 126/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
3/36 = 3 × 7/36 × 7 = 21/252 - Add the two like fractions:
126/252 + 21/252 = 126 + 21/252 = 147/252 - 147/252 simplified gives 7/12
- So, 21/42 + 3/36 = 7/12
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