Add 81/70 and 6/80, Solve 1 11/70 + 6/80 as a fraction

Add 81/70 and 6/80

1^st number: 1 11/70, 2^nd number: 6/80

81/70 + 6/80 is 69/56.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 80 is 560

Next, find the equivalent fraction of both fractional numbers with denominator 560
For the 1st fraction, since 70 × 8 = 560,
81/70 = 81 × 8/70 × 8 = 648/560
Likewise, for the 2nd fraction, since 80 × 7 = 560,
6/80 = 6 × 7/80 × 7 = 42/560
Add the two like fractions:
648/560 + 42/560 = 648 + 42/560 = 690/560
690/560 simplified gives 69/56
So, 81/70 + 6/80 = 69/56
In mixed form: 113/56

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