Add 20/12 and 5/70, Solve 1 8/12 + 5/70 as a fraction

Add 20/12 and 5/70

1^st number: 1 8/12, 2^nd number: 5/70

20/12 + 5/70 is 73/42.

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,
20/12 = 20 × 35/12 × 35 = 700/420
Likewise, for the 2nd fraction, since 70 × 6 = 420,
5/70 = 5 × 6/70 × 6 = 30/420
Add the two like fractions:
700/420 + 30/420 = 700 + 30/420 = 730/420
730/420 simplified gives 73/42
So, 20/12 + 5/70 = 73/42
In mixed form: 131/42

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