Add 42/10 and 9/80, Solve 4 2/10 + 9/80 as a fraction

Add 42/10 and 9/80

1^st number: 4 2/10, 2^nd number: 9/80

42/10 + 9/80 is 69/16.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 80 is 80

Next, find the equivalent fraction of both fractional numbers with denominator 80
For the 1st fraction, since 10 × 8 = 80,
42/10 = 42 × 8/10 × 8 = 336/80
Likewise, for the 2nd fraction, since 80 × 1 = 80,
9/80 = 9 × 1/80 × 1 = 9/80
Add the two like fractions:
336/80 + 9/80 = 336 + 9/80 = 345/80
345/80 simplified gives 69/16
So, 42/10 + 9/80 = 69/16
In mixed form: 45/16

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