Add 81/5 and 21/72
1st number: 16 1/5, 2nd number: 21/72
81/5 + 21/72 is 1979/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 5 × 72 = 360,
81/5 = 81 × 72/5 × 72 = 5832/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
21/72 = 21 × 5/72 × 5 = 105/360 - Add the two like fractions:
5832/360 + 105/360 = 5832 + 105/360 = 5937/360 - 5937/360 simplified gives 1979/120
- So, 81/5 + 21/72 = 1979/120
In mixed form: 1659/120
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