Add 7/36 and 90/21, Solve 7/36 + 4 6/21 as a fraction

Add 7/36 and 90/21

1^st number: 7/36, 2^nd number: 4 6/21

7/36 + 90/21 is 1129/252.

Find the least common denominator or LCM of the two denominators:
LCM of 36 and 21 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 36 × 7 = 252,
7/36 = 7 × 7/36 × 7 = 49/252
Likewise, for the 2nd fraction, since 21 × 12 = 252,
90/21 = 90 × 12/21 × 12 = 1080/252
Add the two like fractions:
49/252 + 1080/252 = 49 + 1080/252 = 1129/252
So, 7/36 + 90/21 = 1129/252
In mixed form: 4121/252

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