Add 81/12 and 56/7, Solve 6 9/12 + 8 0/7 as a fraction

Add 81/12 and 56/7

1^st number: 6 9/12, 2^nd number: 8 0/7

81/12 + 56/7 is 59/4.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 7 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 12 × 7 = 84,
81/12 = 81 × 7/12 × 7 = 567/84
Likewise, for the 2nd fraction, since 7 × 12 = 84,
56/7 = 56 × 12/7 × 12 = 672/84
Add the two like fractions:
567/84 + 672/84 = 567 + 672/84 = 1239/84
1239/84 simplified gives 59/4
So, 81/12 + 56/7 = 59/4
In mixed form: 143/4

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