Add 30/40 and 72/16, Solve 30/40 + 4 8/16 as a fraction

Add 30/40 and 72/16

1^st number: 30/40, 2^nd number: 4 8/16

30/40 + 72/16 is 21/4.

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

Next, find the equivalent fraction of both fractional numbers with denominator 80
For the 1st fraction, since 40 × 2 = 80,
30/40 = 30 × 2/40 × 2 = 60/80
Likewise, for the 2nd fraction, since 16 × 5 = 80,
72/16 = 72 × 5/16 × 5 = 360/80
Add the two like fractions:
60/80 + 360/80 = 60 + 360/80 = 420/80
420/80 simplified gives 21/4
So, 30/40 + 72/16 = 21/4
In mixed form: 51/4

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