Add 42/12 and 30/40, Solve 3 6/12 + 30/40 as a fraction

Add 42/12 and 30/40

1^st number: 3 6/12, 2^nd number: 30/40

42/12 + 30/40 is 17/4.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 40 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 12 × 10 = 120,
42/12 = 42 × 10/12 × 10 = 420/120
Likewise, for the 2nd fraction, since 40 × 3 = 120,
30/40 = 30 × 3/40 × 3 = 90/120
Add the two like fractions:
420/120 + 90/120 = 420 + 90/120 = 510/120
510/120 simplified gives 17/4
So, 42/12 + 30/40 = 17/4
In mixed form: 41/4

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