Add 15/21 and 40/36
1st number: 15/21, 2nd number: 1 4/36
15/21 + 40/36 is 115/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 21 × 12 = 252,
15/21 = 15 × 12/21 × 12 = 180/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
40/36 = 40 × 7/36 × 7 = 280/252 - Add the two like fractions:
180/252 + 280/252 = 180 + 280/252 = 460/252 - 460/252 simplified gives 115/63
- So, 15/21 + 40/36 = 115/63
In mixed form: 152/63
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