Add 80/84 and 81/72, Solve 80/84 + 1 9/72 as a fraction

Add 80/84 and 81/72

1^st number: 80/84, 2^nd number: 1 9/72

80/84 + 81/72 is 349/168.

Find the least common denominator or LCM of the two denominators:
LCM of 84 and 72 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 84 × 6 = 504,
80/84 = 80 × 6/84 × 6 = 480/504
Likewise, for the 2nd fraction, since 72 × 7 = 504,
81/72 = 81 × 7/72 × 7 = 567/504
Add the two like fractions:
480/504 + 567/504 = 480 + 567/504 = 1047/504
1047/504 simplified gives 349/168
So, 80/84 + 81/72 = 349/168
In mixed form: 213/168

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