Add 72/20 and 36/8
1st number: 3 12/20, 2nd number: 4 4/8
72/20 + 36/8 is 81/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 20 × 2 = 40,
72/20 = 72 × 2/20 × 2 = 144/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
36/8 = 36 × 5/8 × 5 = 180/40 - Add the two like fractions:
144/40 + 180/40 = 144 + 180/40 = 324/40 - 324/40 simplified gives 81/10
- So, 72/20 + 36/8 = 81/10
In mixed form: 81/10
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