Add 72/80 and 42/5, Solve 72/80 + 8 2/5 as a fraction

Add 72/80 and 42/5

1^st number: 72/80, 2^nd number: 8 2/5

72/80 + 42/5 is 93/10.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 5 is 80

Next, find the equivalent fraction of both fractional numbers with denominator 80
For the 1st fraction, since 80 × 1 = 80,
72/80 = 72 × 1/80 × 1 = 72/80
Likewise, for the 2nd fraction, since 5 × 16 = 80,
42/5 = 42 × 16/5 × 16 = 672/80
Add the two like fractions:
72/80 + 672/80 = 72 + 672/80 = 744/80
744/80 simplified gives 93/10
So, 72/80 + 42/5 = 93/10
In mixed form: 93/10

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