Add 2/21 and 81/72, Solve 2/21 + 1 9/72 as a fraction

Add 2/21 and 81/72

1^st number: 2/21, 2^nd number: 1 9/72

2/21 + 81/72 is 205/168.

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,
2/21 = 2 × 24/21 × 24 = 48/504
Likewise, for the 2nd fraction, since 72 × 7 = 504,
81/72 = 81 × 7/72 × 7 = 567/504
Add the two like fractions:
48/504 + 567/504 = 48 + 567/504 = 615/504
615/504 simplified gives 205/168
So, 2/21 + 81/72 = 205/168
In mixed form: 137/168

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