Add 27/70 and 28/21, Solve 27/70 + 1 7/21 as a fraction

Add 27/70 and 28/21

1^st number: 27/70, 2^nd number: 1 7/21

27/70 + 28/21 is 361/210.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 21 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 70 × 3 = 210,
27/70 = 27 × 3/70 × 3 = 81/210
Likewise, for the 2nd fraction, since 21 × 10 = 210,
28/21 = 28 × 10/21 × 10 = 280/210
Add the two like fractions:
81/210 + 280/210 = 81 + 280/210 = 361/210
So, 27/70 + 28/21 = 361/210
In mixed form: 1151/210

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