Add 90/4 and 72/21, Solve 22 2/4 + 3 9/21 as a fraction

Add 90/4 and 72/21

1^st number: 22 2/4, 2^nd number: 3 9/21

90/4 + 72/21 is 363/14.

Find the least common denominator or LCM of the two denominators:
LCM of 4 and 21 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 4 × 21 = 84,
90/4 = 90 × 21/4 × 21 = 1890/84
Likewise, for the 2nd fraction, since 21 × 4 = 84,
72/21 = 72 × 4/21 × 4 = 288/84
Add the two like fractions:
1890/84 + 288/84 = 1890 + 288/84 = 2178/84
2178/84 simplified gives 363/14
So, 90/4 + 72/21 = 363/14
In mixed form: 2513/14

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