Add 20/80 and 42/40, Solve 20/80 + 1 2/40 as a fraction

Add 20/80 and 42/40

1^st number: 20/80, 2^nd number: 1 2/40

20/80 + 42/40 is 13/10.

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

Next, find the equivalent fraction of both fractional numbers with denominator 80
For the 1st fraction, since 80 × 1 = 80,
20/80 = 20 × 1/80 × 1 = 20/80
Likewise, for the 2nd fraction, since 40 × 2 = 80,
42/40 = 42 × 2/40 × 2 = 84/80
Add the two like fractions:
20/80 + 84/80 = 20 + 84/80 = 104/80
104/80 simplified gives 13/10
So, 20/80 + 42/40 = 13/10
In mixed form: 13/10

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