Add 21/70 and 81/5, Solve 21/70 + 16 1/5 as a fraction

Add 21/70 and 81/5

1^st number: 21/70, 2^nd number: 16 1/5

21/70 + 81/5 is 33/2.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 5 is 70

Next, find the equivalent fraction of both fractional numbers with denominator 70
For the 1st fraction, since 70 × 1 = 70,
21/70 = 21 × 1/70 × 1 = 21/70
Likewise, for the 2nd fraction, since 5 × 14 = 70,
81/5 = 81 × 14/5 × 14 = 1134/70
Add the two like fractions:
21/70 + 1134/70 = 21 + 1134/70 = 1155/70
1155/70 simplified gives 33/2
So, 21/70 + 81/5 = 33/2
In mixed form: 161/2

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