Add 42/12 and 98/20, Solve 3 6/12 + 4 18/20 as a fraction

Add 42/12 and 98/20

1^st number: 3 6/12, 2^nd number: 4 18/20

42/12 + 98/20 is 42/5.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 20 is 60

Next, find the equivalent fraction of both fractional numbers with denominator 60
For the 1st fraction, since 12 × 5 = 60,
42/12 = 42 × 5/12 × 5 = 210/60
Likewise, for the 2nd fraction, since 20 × 3 = 60,
98/20 = 98 × 3/20 × 3 = 294/60
Add the two like fractions:
210/60 + 294/60 = 210 + 294/60 = 504/60
504/60 simplified gives 42/5
So, 42/12 + 98/20 = 42/5
In mixed form: 82/5

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