Add 20/24 and 90/72
1st number: 20/24, 2nd number: 1 18/72
20/24 + 90/72 is 25/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 24 × 3 = 72,
20/24 = 20 × 3/24 × 3 = 60/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
90/72 = 90 × 1/72 × 1 = 90/72 - Add the two like fractions:
60/72 + 90/72 = 60 + 90/72 = 150/72 - 150/72 simplified gives 25/12
- So, 20/24 + 90/72 = 25/12
In mixed form: 21/12
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