Add 21/36 and 40/63
21/36 + 40/63 is 307/252.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 63 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 63 × 4 = 252,
40/63 = 40 × 4/63 × 4 = 160/252 - Add the two like fractions:
147/252 + 160/252 = 147 + 160/252 = 307/252 - So, 21/36 + 40/63 = 307/252
In mixed form: 155/252
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