Add 20/45 and 45/4
1st number: 20/45, 2nd number: 11 1/4
20/45 + 45/4 is 421/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 4 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
20/45 = 20 × 4/45 × 4 = 80/180 - Likewise, for the 2nd fraction, since 4 × 45 = 180,
45/4 = 45 × 45/4 × 45 = 2025/180 - Add the two like fractions:
80/180 + 2025/180 = 80 + 2025/180 = 2105/180 - 2105/180 simplified gives 421/36
- So, 20/45 + 45/4 = 421/36
In mixed form: 1125/36
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