Add 10/21 and 70/6, Solve 10/21 + 11 4/6 as a fraction

Add 10/21 and 70/6

1^st number: 10/21, 2^nd number: 11 4/6

10/21 + 70/6 is 85/7.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 6 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 21 × 2 = 42,
10/21 = 10 × 2/21 × 2 = 20/42
Likewise, for the 2nd fraction, since 6 × 7 = 42,
70/6 = 70 × 7/6 × 7 = 490/42
Add the two like fractions:
20/42 + 490/42 = 20 + 490/42 = 510/42
510/42 simplified gives 85/7
So, 10/21 + 70/6 = 85/7
In mixed form: 121/7

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