Add 15/12 and 10/70, Solve 1 3/12 + 10/70 as a fraction

Add 15/12 and 10/70

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

15/12 + 10/70 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,
15/12 = 15 × 35/12 × 35 = 525/420
Likewise, for the 2nd fraction, since 70 × 6 = 420,
10/70 = 10 × 6/70 × 6 = 60/420
Add the two like fractions:
525/420 + 60/420 = 525 + 60/420 = 585/420
585/420 simplified gives 39/28
So, 15/12 + 10/70 = 39/28
In mixed form: 111/28

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