Add 28/40 and 27/15, Solve 28/40 + 1 12/15 as a fraction

Add 28/40 and 27/15

1^st number: 28/40, 2^nd number: 1 12/15

28/40 + 27/15 is 5/2.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 15 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 40 × 3 = 120,
28/40 = 28 × 3/40 × 3 = 84/120
Likewise, for the 2nd fraction, since 15 × 8 = 120,
27/15 = 27 × 8/15 × 8 = 216/120
Add the two like fractions:
84/120 + 216/120 = 84 + 216/120 = 300/120
300/120 simplified gives 5/2
So, 28/40 + 27/15 = 5/2
In mixed form: 21/2

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