Add 90/14 and 8/21, Solve 6 6/14 + 8/21 as a fraction

Add 90/14 and 8/21

1^st number: 6 6/14, 2^nd number: 8/21

90/14 + 8/21 is 143/21.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 21 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 14 × 3 = 42,
90/14 = 90 × 3/14 × 3 = 270/42
Likewise, for the 2nd fraction, since 21 × 2 = 42,
8/21 = 8 × 2/21 × 2 = 16/42
Add the two like fractions:
270/42 + 16/42 = 270 + 16/42 = 286/42
286/42 simplified gives 143/21
So, 90/14 + 8/21 = 143/21
In mixed form: 617/21

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