Add 20/45 and 45/12
1st number: 20/45, 2nd number: 3 9/12
20/45 + 45/12 is 151/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 12 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 12 × 15 = 180,
45/12 = 45 × 15/12 × 15 = 675/180 - Add the two like fractions:
80/180 + 675/180 = 80 + 675/180 = 755/180 - 755/180 simplified gives 151/36
- So, 20/45 + 45/12 = 151/36
In mixed form: 47/36
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