Add 36/4 and 72/21
1st number: 9 0/4, 2nd number: 3 9/21
36/4 + 72/21 is 87/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
36/4 = 36 × 21/4 × 21 = 756/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
72/21 = 72 × 4/21 × 4 = 288/84 - Add the two like fractions:
756/84 + 288/84 = 756 + 288/84 = 1044/84 - 1044/84 simplified gives 87/7
- So, 36/4 + 72/21 = 87/7
In mixed form: 123/7
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