Add 3/12 and 80/70, Solve 3/12 + 1 10/70 as a fraction

Add 3/12 and 80/70

1^st number: 3/12, 2^nd number: 1 10/70

3/12 + 80/70 is 39/28.

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,
3/12 = 3 × 35/12 × 35 = 105/420
Likewise, for the 2nd fraction, since 70 × 6 = 420,
80/70 = 80 × 6/70 × 6 = 480/420
Add the two like fractions:
105/420 + 480/420 = 105 + 480/420 = 585/420
585/420 simplified gives 39/28
So, 3/12 + 80/70 = 39/28
In mixed form: 111/28

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