Add 70/21 and 16/35, Solve 3 7/21 + 16/35 as a fraction

Add 70/21 and 16/35

1^st number: 3 7/21, 2^nd number: 16/35

70/21 + 16/35 is 398/105.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 35 is 105

Next, find the equivalent fraction of both fractional numbers with denominator 105
For the 1st fraction, since 21 × 5 = 105,
70/21 = 70 × 5/21 × 5 = 350/105
Likewise, for the 2nd fraction, since 35 × 3 = 105,
16/35 = 16 × 3/35 × 3 = 48/105
Add the two like fractions:
350/105 + 48/105 = 350 + 48/105 = 398/105
So, 70/21 + 16/35 = 398/105
In mixed form: 383/105

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