Add 90/20 and 15/4
1st number: 4 10/20, 2nd number: 3 3/4
90/20 + 15/4 is 33/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 4 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 20 × 1 = 20,
90/20 = 90 × 1/20 × 1 = 90/20 - Likewise, for the 2nd fraction, since 4 × 5 = 20,
15/4 = 15 × 5/4 × 5 = 75/20 - Add the two like fractions:
90/20 + 75/20 = 90 + 75/20 = 165/20 - 165/20 simplified gives 33/4
- So, 90/20 + 15/4 = 33/4
In mixed form: 81/4
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