Add 45/12 and 90/25
1st number: 3 9/12, 2nd number: 3 15/25
45/12 + 90/25 is 147/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 25 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 12 × 25 = 300,
45/12 = 45 × 25/12 × 25 = 1125/300 - Likewise, for the 2nd fraction, since 25 × 12 = 300,
90/25 = 90 × 12/25 × 12 = 1080/300 - Add the two like fractions:
1125/300 + 1080/300 = 1125 + 1080/300 = 2205/300 - 2205/300 simplified gives 147/20
- So, 45/12 + 90/25 = 147/20
In mixed form: 77/20
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