Add 20/5 and 90/12
1st number: 4 0/5, 2nd number: 7 6/12
20/5 + 90/12 is 23/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 5 × 12 = 60,
20/5 = 20 × 12/5 × 12 = 240/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
90/12 = 90 × 5/12 × 5 = 450/60 - Add the two like fractions:
240/60 + 450/60 = 240 + 450/60 = 690/60 - 690/60 simplified gives 23/2
- So, 20/5 + 90/12 = 23/2
In mixed form: 111/2
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