Add 7/21 and 90/54, Solve 7/21 + 1 36/54 as a fraction

Add 7/21 and 90/54

1^st number: 7/21, 2^nd number: 1 36/54

7/21 + 90/54 is 2/1.

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

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 21 × 18 = 378,
7/21 = 7 × 18/21 × 18 = 126/378
Likewise, for the 2nd fraction, since 54 × 7 = 378,
90/54 = 90 × 7/54 × 7 = 630/378
Add the two like fractions:
126/378 + 630/378 = 126 + 630/378 = 756/378
756/378 simplified gives 2/1
So, 7/21 + 90/54 = 2/1

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