Add 72/18 and 45/12
1st number: 4 0/18, 2nd number: 3 9/12
72/18 + 45/12 is 31/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 12 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 18 × 2 = 36,
72/18 = 72 × 2/18 × 2 = 144/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
45/12 = 45 × 3/12 × 3 = 135/36 - Add the two like fractions:
144/36 + 135/36 = 144 + 135/36 = 279/36 - 279/36 simplified gives 31/4
- So, 72/18 + 45/12 = 31/4
In mixed form: 73/4
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