Add 12/20 and 84/90
12/20 + 84/90 is 23/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
12/20 = 12 × 9/20 × 9 = 108/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
84/90 = 84 × 2/90 × 2 = 168/180 - Add the two like fractions:
108/180 + 168/180 = 108 + 168/180 = 276/180 - 276/180 simplified gives 23/15
- So, 12/20 + 84/90 = 23/15
In mixed form: 18/15
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