Add 28/70 and 21/6, Solve 28/70 + 3 3/6 as a fraction

Add 28/70 and 21/6

1^st number: 28/70, 2^nd number: 3 3/6

28/70 + 21/6 is 39/10.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 6 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 70 × 3 = 210,
28/70 = 28 × 3/70 × 3 = 84/210
Likewise, for the 2nd fraction, since 6 × 35 = 210,
21/6 = 21 × 35/6 × 35 = 735/210
Add the two like fractions:
84/210 + 735/210 = 84 + 735/210 = 819/210
819/210 simplified gives 39/10
So, 28/70 + 21/6 = 39/10
In mixed form: 39/10

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