Add 81/70 and 70/12, Solve 1 11/70 + 5 10/12 as a fraction

Add 81/70 and 70/12

1^st number: 1 11/70, 2^nd number: 5 10/12

81/70 + 70/12 is 734/105.

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

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 70 × 6 = 420,
81/70 = 81 × 6/70 × 6 = 486/420
Likewise, for the 2nd fraction, since 12 × 35 = 420,
70/12 = 70 × 35/12 × 35 = 2450/420
Add the two like fractions:
486/420 + 2450/420 = 486 + 2450/420 = 2936/420
2936/420 simplified gives 734/105
So, 81/70 + 70/12 = 734/105
In mixed form: 6104/105

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