Add 81/12 and 9/70, Solve 6 9/12 + 9/70 as a fraction

Add 81/12 and 9/70

1^st number: 6 9/12, 2^nd number: 9/70

81/12 + 9/70 is 963/140.

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,
81/12 = 81 × 35/12 × 35 = 2835/420
Likewise, for the 2nd fraction, since 70 × 6 = 420,
9/70 = 9 × 6/70 × 6 = 54/420
Add the two like fractions:
2835/420 + 54/420 = 2835 + 54/420 = 2889/420
2889/420 simplified gives 963/140
So, 81/12 + 9/70 = 963/140
In mixed form: 6123/140

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