Add 90/12 and 80/20
1st number: 7 6/12, 2nd number: 4 0/20
90/12 + 80/20 is 23/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
90/12 = 90 × 5/12 × 5 = 450/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
80/20 = 80 × 3/20 × 3 = 240/60 - Add the two like fractions:
450/60 + 240/60 = 450 + 240/60 = 690/60 - 690/60 simplified gives 23/2
- So, 90/12 + 80/20 = 23/2
In mixed form: 111/2
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