Add 81/72 and 32/20
1st number: 1 9/72, 2nd number: 1 12/20
81/72 + 32/20 is 109/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 20 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
81/72 = 81 × 5/72 × 5 = 405/360 - Likewise, for the 2nd fraction, since 20 × 18 = 360,
32/20 = 32 × 18/20 × 18 = 576/360 - Add the two like fractions:
405/360 + 576/360 = 405 + 576/360 = 981/360 - 981/360 simplified gives 109/40
- So, 81/72 + 32/20 = 109/40
In mixed form: 229/40
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