Add 90/21 and 25/84, Solve 4 6/21 + 25/84 as a fraction

Add 90/21 and 25/84

1^st number: 4 6/21, 2^nd number: 25/84

90/21 + 25/84 is 55/12.

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

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 21 × 4 = 84,
90/21 = 90 × 4/21 × 4 = 360/84
Likewise, for the 2nd fraction, since 84 × 1 = 84,
25/84 = 25 × 1/84 × 1 = 25/84
Add the two like fractions:
360/84 + 25/84 = 360 + 25/84 = 385/84
385/84 simplified gives 55/12
So, 90/21 + 25/84 = 55/12
In mixed form: 47/12

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