Add 7/72 and 90/21, Solve 7/72 + 4 6/21 as a fraction

Add 7/72 and 90/21

1^st number: 7/72, 2^nd number: 4 6/21

7/72 + 90/21 is 2209/504.

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

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 72 × 7 = 504,
7/72 = 7 × 7/72 × 7 = 49/504
Likewise, for the 2nd fraction, since 21 × 24 = 504,
90/21 = 90 × 24/21 × 24 = 2160/504
Add the two like fractions:
49/504 + 2160/504 = 49 + 2160/504 = 2209/504
So, 7/72 + 90/21 = 2209/504
In mixed form: 4193/504

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