Add 90/54 and 24/21, Solve 1 36/54 + 1 3/21 as a fraction

Add 90/54 and 24/21

1^st number: 1 36/54, 2^nd number: 1 3/21

90/54 + 24/21 is 59/21.

Find the least common denominator or LCM of the two denominators:
LCM of 54 and 21 is 378

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 54 × 7 = 378,
90/54 = 90 × 7/54 × 7 = 630/378
Likewise, for the 2nd fraction, since 21 × 18 = 378,
24/21 = 24 × 18/21 × 18 = 432/378
Add the two like fractions:
630/378 + 432/378 = 630 + 432/378 = 1062/378
1062/378 simplified gives 59/21
So, 90/54 + 24/21 = 59/21
In mixed form: 217/21

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