Add 90/84 and 81/54, Solve 1 6/84 + 1 27/54 as a fraction

Add 90/84 and 81/54

1^st number: 1 6/84, 2^nd number: 1 27/54

90/84 + 81/54 is 18/7.

Find the least common denominator or LCM of the two denominators:
LCM of 84 and 54 is 756

Next, find the equivalent fraction of both fractional numbers with denominator 756
For the 1st fraction, since 84 × 9 = 756,
90/84 = 90 × 9/84 × 9 = 810/756
Likewise, for the 2nd fraction, since 54 × 14 = 756,
81/54 = 81 × 14/54 × 14 = 1134/756
Add the two like fractions:
810/756 + 1134/756 = 810 + 1134/756 = 1944/756
1944/756 simplified gives 18/7
So, 90/84 + 81/54 = 18/7
In mixed form: 24/7

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