Add 90/21 and 30/72, Solve 4 6/21 + 30/72 as a fraction

Add 90/21 and 30/72

1^st number: 4 6/21, 2^nd number: 30/72

90/21 + 30/72 is 395/84.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 72 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 21 × 24 = 504,
90/21 = 90 × 24/21 × 24 = 2160/504
Likewise, for the 2nd fraction, since 72 × 7 = 504,
30/72 = 30 × 7/72 × 7 = 210/504
Add the two like fractions:
2160/504 + 210/504 = 2160 + 210/504 = 2370/504
2370/504 simplified gives 395/84
So, 90/21 + 30/72 = 395/84
In mixed form: 459/84

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