Add 12/3 and 42/10, Solve 4 0/3 + 4 2/10 as a fraction

Add 12/3 and 42/10

1^st number: 4 0/3, 2^nd number: 4 2/10

12/3 + 42/10 is 41/5.

Find the least common denominator or LCM of the two denominators:
LCM of 3 and 10 is 30

Next, find the equivalent fraction of both fractional numbers with denominator 30
For the 1st fraction, since 3 × 10 = 30,
12/3 = 12 × 10/3 × 10 = 120/30
Likewise, for the 2nd fraction, since 10 × 3 = 30,
42/10 = 42 × 3/10 × 3 = 126/30
Add the two like fractions:
120/30 + 126/30 = 120 + 126/30 = 246/30
246/30 simplified gives 41/5
So, 12/3 + 42/10 = 41/5
In mixed form: 81/5

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