Add 28/70 and 56/21, Solve 28/70 + 2 14/21 as a fraction

Add 28/70 and 56/21

1^st number: 28/70, 2^nd number: 2 14/21

28/70 + 56/21 is 46/15.

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,
28/70 = 28 × 3/70 × 3 = 84/210
Likewise, for the 2nd fraction, since 21 × 10 = 210,
56/21 = 56 × 10/21 × 10 = 560/210
Add the two like fractions:
84/210 + 560/210 = 84 + 560/210 = 644/210
644/210 simplified gives 46/15
So, 28/70 + 56/21 = 46/15
In mixed form: 31/15

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