Add 3/2 and 42/80, Solve 1 1/2 + 42/80 as a fraction

Add 3/2 and 42/80

1^st number: 1 1/2, 2^nd number: 42/80

3/2 + 42/80 is 81/40.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 80 is 80

Next, find the equivalent fraction of both fractional numbers with denominator 80
For the 1st fraction, since 2 × 40 = 80,
3/2 = 3 × 40/2 × 40 = 120/80
Likewise, for the 2nd fraction, since 80 × 1 = 80,
42/80 = 42 × 1/80 × 1 = 42/80
Add the two like fractions:
120/80 + 42/80 = 120 + 42/80 = 162/80
162/80 simplified gives 81/40
So, 3/2 + 42/80 = 81/40
In mixed form: 21/40

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