Add 42/12 and 7/80, Solve 3 6/12 + 7/80 as a fraction

Add 42/12 and 7/80

1^st number: 3 6/12, 2^nd number: 7/80

42/12 + 7/80 is 287/80.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 80 is 240

Next, find the equivalent fraction of both fractional numbers with denominator 240
For the 1st fraction, since 12 × 20 = 240,
42/12 = 42 × 20/12 × 20 = 840/240
Likewise, for the 2nd fraction, since 80 × 3 = 240,
7/80 = 7 × 3/80 × 3 = 21/240
Add the two like fractions:
840/240 + 21/240 = 840 + 21/240 = 861/240
861/240 simplified gives 287/80
So, 42/12 + 7/80 = 287/80
In mixed form: 347/80

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