Add 7/5 and 45/12, Solve 1 2/5 + 3 9/12 as a fraction

Add 7/5 and 45/12

1^st number: 1 2/5, 2^nd number: 3 9/12

7/5 + 45/12 is 103/20.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 12 is 60

Next, find the equivalent fraction of both fractional numbers with denominator 60
For the 1st fraction, since 5 × 12 = 60,
7/5 = 7 × 12/5 × 12 = 84/60
Likewise, for the 2nd fraction, since 12 × 5 = 60,
45/12 = 45 × 5/12 × 5 = 225/60
Add the two like fractions:
84/60 + 225/60 = 84 + 225/60 = 309/60
309/60 simplified gives 103/20
So, 7/5 + 45/12 = 103/20
In mixed form: 53/20

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