Add 75/20 and 90/60
1st number: 3 15/20, 2nd number: 1 30/60
75/20 + 90/60 is 21/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 60 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
75/20 = 75 × 3/20 × 3 = 225/60 - Likewise, for the 2nd fraction, since 60 × 1 = 60,
90/60 = 90 × 1/60 × 1 = 90/60 - Add the two like fractions:
225/60 + 90/60 = 225 + 90/60 = 315/60 - 315/60 simplified gives 21/4
- So, 75/20 + 90/60 = 21/4
In mixed form: 51/4
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