Add 72/2 and 40/21
1st number: 36 0/2, 2nd number: 1 19/21
72/2 + 40/21 is 796/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
72/2 = 72 × 21/2 × 21 = 1512/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
40/21 = 40 × 2/21 × 2 = 80/42 - Add the two like fractions:
1512/42 + 80/42 = 1512 + 80/42 = 1592/42 - 1592/42 simplified gives 796/21
- So, 72/2 + 40/21 = 796/21
In mixed form: 3719/21
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