Add 90/28 and 21/36, Solve 3 6/28 + 21/36 as a fraction

Add 90/28 and 21/36

1^st number: 3 6/28, 2^nd number: 21/36

90/28 + 21/36 is 319/84.

Find the least common denominator or LCM of the two denominators:
LCM of 28 and 36 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 28 × 9 = 252,
90/28 = 90 × 9/28 × 9 = 810/252
Likewise, for the 2nd fraction, since 36 × 7 = 252,
21/36 = 21 × 7/36 × 7 = 147/252
Add the two like fractions:
810/252 + 147/252 = 810 + 147/252 = 957/252
957/252 simplified gives 319/84
So, 90/28 + 21/36 = 319/84
In mixed form: 367/84

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