Add 90/20 and 12/16
1st number: 4 10/20, 2nd number: 12/16
90/20 + 12/16 is 21/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 20 × 4 = 80,
90/20 = 90 × 4/20 × 4 = 360/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
12/16 = 12 × 5/16 × 5 = 60/80 - Add the two like fractions:
360/80 + 60/80 = 360 + 60/80 = 420/80 - 420/80 simplified gives 21/4
- So, 90/20 + 12/16 = 21/4
In mixed form: 51/4
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