Add 72/90 and 84/12
1st number: 72/90, 2nd number: 7 0/12
72/90 + 84/12 is 39/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
72/90 = 72 × 2/90 × 2 = 144/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
84/12 = 84 × 15/12 × 15 = 1260/180 - Add the two like fractions:
144/180 + 1260/180 = 144 + 1260/180 = 1404/180 - 1404/180 simplified gives 39/5
- So, 72/90 + 84/12 = 39/5
In mixed form: 74/5
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