Add 21/6 and 60/80, Solve 3 3/6 + 60/80 as a fraction

Add 21/6 and 60/80

1^st number: 3 3/6, 2^nd number: 60/80

21/6 + 60/80 is 17/4.

Find the least common denominator or LCM of the two denominators:
LCM of 6 and 80 is 240

Next, find the equivalent fraction of both fractional numbers with denominator 240
For the 1st fraction, since 6 × 40 = 240,
21/6 = 21 × 40/6 × 40 = 840/240
Likewise, for the 2nd fraction, since 80 × 3 = 240,
60/80 = 60 × 3/80 × 3 = 180/240
Add the two like fractions:
840/240 + 180/240 = 840 + 180/240 = 1020/240
1020/240 simplified gives 17/4
So, 21/6 + 60/80 = 17/4
In mixed form: 41/4

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