Add 20/16 and 90/45
1st number: 1 4/16, 2nd number: 2 0/45
20/16 + 90/45 is 13/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 45 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 16 × 45 = 720,
20/16 = 20 × 45/16 × 45 = 900/720 - Likewise, for the 2nd fraction, since 45 × 16 = 720,
90/45 = 90 × 16/45 × 16 = 1440/720 - Add the two like fractions:
900/720 + 1440/720 = 900 + 1440/720 = 2340/720 - 2340/720 simplified gives 13/4
- So, 20/16 + 90/45 = 13/4
In mixed form: 31/4
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