Add 90/21 and 80/6, Solve 4 6/21 + 13 2/6 as a fraction

Add 90/21 and 80/6

1^st number: 4 6/21, 2^nd number: 13 2/6

90/21 + 80/6 is 370/21.

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,
90/21 = 90 × 2/21 × 2 = 180/42
Likewise, for the 2nd fraction, since 6 × 7 = 42,
80/6 = 80 × 7/6 × 7 = 560/42
Add the two like fractions:
180/42 + 560/42 = 180 + 560/42 = 740/42
740/42 simplified gives 370/21
So, 90/21 + 80/6 = 370/21
In mixed form: 1713/21

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