Add 72/16 and 9/40, Solve 4 8/16 + 9/40 as a fraction

Add 72/16 and 9/40

1^st number: 4 8/16, 2^nd number: 9/40

72/16 + 9/40 is 189/40.

Find the least common denominator or LCM of the two denominators:
LCM of 16 and 40 is 80

Next, find the equivalent fraction of both fractional numbers with denominator 80
For the 1st fraction, since 16 × 5 = 80,
72/16 = 72 × 5/16 × 5 = 360/80
Likewise, for the 2nd fraction, since 40 × 2 = 80,
9/40 = 9 × 2/40 × 2 = 18/80
Add the two like fractions:
360/80 + 18/80 = 360 + 18/80 = 378/80
378/80 simplified gives 189/40
So, 72/16 + 9/40 = 189/40
In mixed form: 429/40

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