Add 21/36 and 30/7
1st number: 21/36, 2nd number: 4 2/7
21/36 + 30/7 is 409/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 7 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 7 × 36 = 252,
30/7 = 30 × 36/7 × 36 = 1080/252 - Add the two like fractions:
147/252 + 1080/252 = 147 + 1080/252 = 1227/252 - 1227/252 simplified gives 409/84
- So, 21/36 + 30/7 = 409/84
In mixed form: 473/84
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