Add 42/12 and 12/70, Solve 3 6/12 + 12/70 as a fraction

Add 42/12 and 12/70

1^st number: 3 6/12, 2^nd number: 12/70

42/12 + 12/70 is 257/70.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 70 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 12 × 35 = 420,
42/12 = 42 × 35/12 × 35 = 1470/420
Likewise, for the 2nd fraction, since 70 × 6 = 420,
12/70 = 12 × 6/70 × 6 = 72/420
Add the two like fractions:
1470/420 + 72/420 = 1470 + 72/420 = 1542/420
1542/420 simplified gives 257/70
So, 42/12 + 12/70 = 257/70
In mixed form: 347/70

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