Add 9/72 and 21/15, Solve 9/72 + 1 6/15 as a fraction

Add 9/72 and 21/15

1^st number: 9/72, 2^nd number: 1 6/15

9/72 + 21/15 is 61/40.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 15 is 360

Next, find the equivalent fraction of both fractional numbers with denominator 360
For the 1st fraction, since 72 × 5 = 360,
9/72 = 9 × 5/72 × 5 = 45/360
Likewise, for the 2nd fraction, since 15 × 24 = 360,
21/15 = 21 × 24/15 × 24 = 504/360
Add the two like fractions:
45/360 + 504/360 = 45 + 504/360 = 549/360
549/360 simplified gives 61/40
So, 9/72 + 21/15 = 61/40
In mixed form: 121/40

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