Add 72/54 and 90/42, Solve 1 18/54 + 2 6/42 as a fraction

Add 72/54 and 90/42

1^st number: 1 18/54, 2^nd number: 2 6/42

72/54 + 90/42 is 73/21.

Find the least common denominator or LCM of the two denominators:
LCM of 54 and 42 is 378

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 54 × 7 = 378,
72/54 = 72 × 7/54 × 7 = 504/378
Likewise, for the 2nd fraction, since 42 × 9 = 378,
90/42 = 90 × 9/42 × 9 = 810/378
Add the two like fractions:
504/378 + 810/378 = 504 + 810/378 = 1314/378
1314/378 simplified gives 73/21
So, 72/54 + 90/42 = 73/21
In mixed form: 310/21

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