Add 15/2 and 21/45, Solve 7 1/2 + 21/45 as a fraction

Add 15/2 and 21/45

1^st number: 7 1/2, 2^nd number: 21/45

15/2 + 21/45 is 239/30.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 45 is 90

Next, find the equivalent fraction of both fractional numbers with denominator 90
For the 1st fraction, since 2 × 45 = 90,
15/2 = 15 × 45/2 × 45 = 675/90
Likewise, for the 2nd fraction, since 45 × 2 = 90,
21/45 = 21 × 2/45 × 2 = 42/90
Add the two like fractions:
675/90 + 42/90 = 675 + 42/90 = 717/90
717/90 simplified gives 239/30
So, 15/2 + 21/45 = 239/30
In mixed form: 729/30

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